Replace s/NULL/nullptr/ in field initializers used in constructors.

This change has been generated by a clang tool developed for the
go/miracleptr project.

Bug: 1080832
Change-Id: Ie7f428c8ad300db1df95d873668163d0ac719a22
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2231843
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Bartek Nowierski <bartekn@chromium.org>
Commit-Queue: Łukasz Anforowicz <lukasza@chromium.org>
Cr-Commit-Position: refs/heads/master@{#776343}

base/containers/stack_container.h

@@ -84,17 +84,15 @@ class StackAllocator : public std::allocator<T> {
   // for Us.
   // TODO: If we were fancy pants, perhaps we could share storage
   // iff sizeof(T) == sizeof(U).
-  template<typename U, size_t other_capacity>
+  template <typename U, size_t other_capacity>
   StackAllocator(const StackAllocator<U, other_capacity>& other)
-      : source_(NULL) {
-  }
+      : source_(nullptr) {}
 
   // This constructor must exist. It creates a default allocator that doesn't
   // actually have a stack buffer. glibc's std::string() will compare the
   // current allocator against the default-constructed allocator, so this
   // should be fast.
-  StackAllocator() : source_(NULL) {
-  }
+  StackAllocator() : source_(nullptr) {}
 
   explicit StackAllocator(Source* source) : source_(source) {
   }

base/strings/string_piece.h

@@ -163,7 +163,7 @@ template <typename STRING_TYPE> class BasicStringPiece {
   // We provide non-explicit singleton constructors so users can pass
   // in a "const char*" or a "string" wherever a "StringPiece" is
   // expected (likewise for char16, string16, StringPiece16).
-  constexpr BasicStringPiece() : ptr_(NULL), length_(0) {}
+  constexpr BasicStringPiece() : ptr_(nullptr), length_(0) {}
   // TODO(crbug.com/1049498): Construction from nullptr is not allowed for
   // std::basic_string_view, so remove the special handling for it.
   // Note: This doesn't just use STRING_TYPE::traits_type::length(), since that

cc/trees/occlusion_tracker.h

@@ -59,7 +59,7 @@ class CC_EXPORT OcclusionTracker {
 
  protected:
   struct StackObject {
-    StackObject() : target(0) {}
+    StackObject() : target(nullptr) {}
     explicit StackObject(const RenderSurfaceImpl* target) : target(target) {}
     const RenderSurfaceImpl* target;
     SimpleEnclosedRegion occlusion_from_outside_target;

chrome/browser/apps/guest_view/web_view_interactive_browsertest.cc

@@ -153,8 +153,8 @@ class NewSubViewAddedObserver : content::RenderWidgetHostViewCocoaObserver {
 class WebViewInteractiveTest : public extensions::PlatformAppBrowserTest {
  public:
   WebViewInteractiveTest()
-      : guest_web_contents_(NULL),
-        embedder_web_contents_(NULL),
+      : guest_web_contents_(nullptr),
+        embedder_web_contents_(nullptr),
         corner_(gfx::Point()),
         mouse_click_result_(false),
         first_click_(true) {
@@ -410,8 +410,7 @@ class WebViewInteractiveTest : public extensions::PlatformAppBrowserTest {
   class PopupCreatedObserver {
    public:
     PopupCreatedObserver()
-        : initial_widget_count_(0),
-          last_render_widget_host_(NULL) {}
+        : initial_widget_count_(0), last_render_widget_host_(nullptr) {}
 
     ~PopupCreatedObserver() {}
 

chrome/browser/apps/platform_apps/api/media_galleries/media_galleries_watch_apitest.cc

@@ -74,7 +74,7 @@ const char kGalleryChangedEventReceived[] = "gallery_changed_event_received";
 class MediaGalleriesGalleryWatchApiTest : public extensions::ExtensionApiTest {
  public:
   MediaGalleriesGalleryWatchApiTest()
-      : extension_(NULL), background_host_(NULL) {}
+      : extension_(nullptr), background_host_(nullptr) {}
   ~MediaGalleriesGalleryWatchApiTest() override {}
 
  protected:

chrome/browser/bookmarks/managed_bookmark_service_unittest.cc

@@ -58,7 +58,7 @@ TEST(ManagedBookmarkServiceNoPolicyTest, EmptyManagedNode) {
 
 class ManagedBookmarkServiceTest : public testing::Test {
  public:
-  ManagedBookmarkServiceTest() : managed_(NULL), model_(NULL) {}
+  ManagedBookmarkServiceTest() : managed_(nullptr), model_(nullptr) {}
   ~ManagedBookmarkServiceTest() override {}
 
   void SetUp() override {

chrome/browser/chrome_browser_main.cc

@@ -486,7 +486,7 @@ ChromeBrowserMainParts::ChromeBrowserMainParts(
       result_code_(service_manager::RESULT_CODE_NORMAL_EXIT),
       should_call_pre_main_loop_start_startup_on_variations_service_(
           !parameters.ui_task),
-      profile_(NULL),
+      profile_(nullptr),
       run_message_loop_(true),
       startup_data_(startup_data) {
   DCHECK(startup_data_);

chrome/browser/devtools/devtools_sanity_browsertest.cc

@@ -216,7 +216,7 @@ void SwitchToExtensionPanel(DevToolsWindow* window,
 
 class DevToolsSanityTest : public InProcessBrowserTest {
  public:
-  DevToolsSanityTest() : window_(NULL) {}
+  DevToolsSanityTest() : window_(nullptr) {}
 
   void SetUpOnMainThread() override {
     host_resolver()->AddRule("*", "127.0.0.1");
@@ -618,7 +618,7 @@ class DevToolsExperimentalExtensionTest : public DevToolsExtensionTest {
 
 class WorkerDevToolsSanityTest : public InProcessBrowserTest {
  public:
-  WorkerDevToolsSanityTest() : window_(NULL) {}
+  WorkerDevToolsSanityTest() : window_(nullptr) {}
 
  protected:
   class WorkerCreationObserver : public DevToolsAgentHostObserver {

chrome/browser/diagnostics/diagnostics_controller.cc

@@ -26,7 +26,7 @@ DiagnosticsController* DiagnosticsController::GetInstance() {
   return base::Singleton<DiagnosticsController>::get();
 }
 
-DiagnosticsController::DiagnosticsController() : writer_(NULL) {}
+DiagnosticsController::DiagnosticsController() : writer_(nullptr) {}
 
 DiagnosticsController::~DiagnosticsController() {}
 

chrome/browser/download/download_ui_controller_unittest.cc

@@ -165,11 +165,10 @@ DownloadUIControllerTest::TestingDownloadCoreServiceFactory(
 }
 
 DownloadUIControllerTest::DownloadUIControllerTest()
-    : download_history_manager_observer_(NULL),
-      manager_observer_(NULL),
-      notified_item_(NULL),
-      notified_item_receiver_factory_(&notified_item_) {
-}
+    : download_history_manager_observer_(nullptr),
+      manager_observer_(nullptr),
+      notified_item_(nullptr),
+      notified_item_receiver_factory_(&notified_item_) {}
 
 void DownloadUIControllerTest::SetUp() {
   ChromeRenderViewHostTestHarness::SetUp();

chrome/browser/extensions/activity_log/activity_log.cc

@@ -460,7 +460,7 @@ ActivityLog* ActivityLog::GetInstance(content::BrowserContext* context) {
 
 // Use GetInstance instead of directly creating an ActivityLog.
 ActivityLog::ActivityLog(content::BrowserContext* context)
-    : database_policy_(NULL),
+    : database_policy_(nullptr),
       database_policy_type_(ActivityLogPolicy::POLICY_INVALID),
       profile_(Profile::FromBrowserContext(context)),
       extension_system_(ExtensionSystem::Get(context)),

chrome/browser/extensions/api/bookmarks/bookmark_api_helpers_unittest.cc

@@ -35,11 +35,11 @@ namespace bookmark_api_helpers {
 class ExtensionBookmarksTest : public testing::Test {
  public:
   ExtensionBookmarksTest()
-      : managed_(NULL),
-        model_(NULL),
-        node_(NULL),
-        node2_(NULL),
-        folder_(NULL) {}
+      : managed_(nullptr),
+        model_(nullptr),
+        node_(nullptr),
+        node2_(nullptr),
+        folder_(nullptr) {}
 
   void SetUp() override {
     profile_.CreateBookmarkModel(false);

chrome/browser/extensions/api/braille_display_private/mock_braille_controller.cc

@@ -9,7 +9,7 @@ namespace api {
 namespace braille_display_private {
 
 MockBrailleController::MockBrailleController()
-    : available_(false), observer_(NULL) {}
+    : available_(false), observer_(nullptr) {}
 
 std::unique_ptr<DisplayState> MockBrailleController::GetDisplayState() {
   std::unique_ptr<DisplayState> state(new DisplayState());

chrome/browser/extensions/api/content_settings/content_settings_apitest.cc

@@ -45,7 +45,7 @@ namespace extensions {
 
 class ExtensionContentSettingsApiTest : public ExtensionApiTest {
  public:
-  ExtensionContentSettingsApiTest() : profile_(NULL) {}
+  ExtensionContentSettingsApiTest() : profile_(nullptr) {}
 
   void SetUpOnMainThread() override {
     ExtensionApiTest::SetUpOnMainThread();

chrome/browser/extensions/api/debugger/debugger_api.cc

@@ -389,9 +389,7 @@ bool ExtensionDevToolsClientHost::MayWriteLocalFiles() {
 
 // DebuggerFunction -----------------------------------------------------------
 
-DebuggerFunction::DebuggerFunction()
-    : client_host_(NULL) {
-}
+DebuggerFunction::DebuggerFunction() : client_host_(nullptr) {}
 
 DebuggerFunction::~DebuggerFunction() = default;
 

chrome/browser/extensions/api/declarative_content/request_content_script_apitest.cc

@@ -113,7 +113,7 @@ class RequestContentScriptAPITest : public ExtensionBrowserTest {
 };
 
 RequestContentScriptAPITest::RequestContentScriptAPITest()
-    : extension_(NULL) {}
+    : extension_(nullptr) {}
 
 testing::AssertionResult RequestContentScriptAPITest::RunTest(
     PermissionOrMatcherType manifest_permission,

chrome/browser/extensions/api/downloads/downloads_api_browsertest.cc

@@ -320,10 +320,9 @@ class DownloadOpenObserver : public download::DownloadItem::Observer {
 class DownloadExtensionTest : public ExtensionApiTest {
  public:
   DownloadExtensionTest()
-    : extension_(NULL),
-      incognito_browser_(NULL),
-      current_browser_(NULL) {
-  }
+      : extension_(nullptr),
+        incognito_browser_(nullptr),
+        current_browser_(nullptr) {}
 
  protected:
   // Used with CreateHistoryDownloads

chrome/browser/extensions/api/extension_action/extension_action_api.cc

@@ -240,11 +240,10 @@ void ExtensionActionAPI::Shutdown() {
 //
 
 ExtensionActionFunction::ExtensionActionFunction()
-    : details_(NULL),
+    : details_(nullptr),
       tab_id_(ExtensionAction::kDefaultTabId),
-      contents_(NULL),
-      extension_action_(NULL) {
-}
+      contents_(nullptr),
+      extension_action_(nullptr) {}
 
 ExtensionActionFunction::~ExtensionActionFunction() {
 }

chrome/browser/extensions/api/gcm/gcm_apitest.cc

@@ -60,7 +60,7 @@ namespace extensions {
 
 class GcmApiTest : public ExtensionApiTest {
  public:
-  GcmApiTest() : fake_gcm_profile_service_(NULL) {}
+  GcmApiTest() : fake_gcm_profile_service_(nullptr) {}
 
  protected:
   void SetUpCommandLine(base::CommandLine* command_line) override;

chrome/browser/extensions/api/messaging/native_message_process_host.cc

@@ -59,7 +59,7 @@ NativeMessageProcessHost::NativeMessageProcessHost(
     const std::string& source_extension_id,
     const std::string& native_host_name,
     std::unique_ptr<NativeProcessLauncher> launcher)
-    : client_(NULL),
+    : client_(nullptr),
       source_extension_id_(source_extension_id),
       native_host_name_(native_host_name),
       launcher_(std::move(launcher)),

chrome/browser/extensions/api/preference/preference_apitest.cc

@@ -42,7 +42,7 @@
 
 class ExtensionPreferenceApiTest : public extensions::ExtensionApiTest {
  protected:
-  ExtensionPreferenceApiTest() : profile_(NULL) {}
+  ExtensionPreferenceApiTest() : profile_(nullptr) {}
 
   void CheckPreferencesSet() {
     PrefService* prefs = profile_->GetPrefs();

chrome/browser/extensions/api/tabs/tabs_api.cc

@@ -1211,8 +1211,7 @@ bool TabsHighlightFunction::HighlightTab(TabStripModel* tabstrip,
   return true;
 }
 
-TabsUpdateFunction::TabsUpdateFunction() : web_contents_(NULL) {
-}
+TabsUpdateFunction::TabsUpdateFunction() : web_contents_(nullptr) {}
 
 ExtensionFunction::ResponseAction TabsUpdateFunction::Run() {
   std::unique_ptr<tabs::Update::Params> params(

chrome/browser/extensions/app_background_page_apitest.cc

@@ -145,8 +145,7 @@ namespace {
 // Native Client embeds.
 class AppBackgroundPageNaClTest : public AppBackgroundPageApiTest {
  public:
-  AppBackgroundPageNaClTest()
-      : extension_(NULL) {}
+  AppBackgroundPageNaClTest() : extension_(nullptr) {}
   ~AppBackgroundPageNaClTest() override {}
 
   void SetUpOnMainThread() override {

chrome/browser/extensions/error_console/error_console_browsertest.cc

@@ -132,7 +132,7 @@ void CheckManifestError(const ExtensionError* error,
 
 class ErrorConsoleBrowserTest : public ExtensionBrowserTest {
  public:
-  ErrorConsoleBrowserTest() : error_console_(NULL) { }
+  ErrorConsoleBrowserTest() : error_console_(nullptr) {}
   ~ErrorConsoleBrowserTest() override {}
 
  protected:

chrome/browser/extensions/extension_browsertest.cc

@@ -128,7 +128,7 @@ ExtensionBrowserTest::ExtensionBrowserTest()
       start_menu_override_(base::DIR_START_MENU),
       common_start_menu_override_(base::DIR_COMMON_START_MENU),
 #endif
-      profile_(NULL),
+      profile_(nullptr),
       verifier_format_override_(crx_file::VerifierFormat::CRX3) {
   EXPECT_TRUE(temp_dir_.CreateUniqueTempDir());
 }

chrome/browser/extensions/extension_commands_global_registry.cc

@@ -15,9 +15,9 @@ ExtensionCommandsGlobalRegistry::ExtensionCommandsGlobalRegistry(
     content::BrowserContext* context)
     : ExtensionKeybindingRegistry(context,
                                   ExtensionKeybindingRegistry::ALL_EXTENSIONS,
-                                  NULL),
+                                  nullptr),
       browser_context_(context),
-      registry_for_active_window_(NULL) {
+      registry_for_active_window_(nullptr) {
   Init();
 }
 

chrome/browser/extensions/extension_gcm_app_handler_unittest.cc

@@ -245,7 +245,7 @@ class ExtensionGCMAppHandlerTest : public testing::Test {
 
   ExtensionGCMAppHandlerTest()
       : task_environment_(content::BrowserTaskEnvironment::REAL_IO_THREAD),
-        extension_service_(NULL),
+        extension_service_(nullptr),
         registration_result_(gcm::GCMClient::UNKNOWN_ERROR),
         unregistration_result_(gcm::GCMClient::UNKNOWN_ERROR) {}
 

chrome/browser/extensions/extension_user_script_loader_unittest.cc

@@ -43,7 +43,7 @@ namespace extensions {
 class ExtensionUserScriptLoaderTest : public testing::Test,
                                       public content::NotificationObserver {
  public:
-  ExtensionUserScriptLoaderTest() : shared_memory_(NULL) {}
+  ExtensionUserScriptLoaderTest() : shared_memory_(nullptr) {}
 
   void SetUp() override {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());

chrome/browser/extensions/tab_helper.cc

@@ -78,7 +78,7 @@ TabHelper::~TabHelper() = default;
 TabHelper::TabHelper(content::WebContents* web_contents)
     : content::WebContentsObserver(web_contents),
       profile_(Profile::FromBrowserContext(web_contents->GetBrowserContext())),
-      extension_app_(NULL),
+      extension_app_(nullptr),
       script_executor_(new ScriptExecutor(web_contents)),
       extension_action_runner_(new ExtensionActionRunner(web_contents)),
       declarative_net_request_helper_(web_contents) {

chrome/browser/extensions/test_blacklist.cc

@@ -49,15 +49,13 @@ void BlacklistStateFetcherMock::Clear() {
   states_.clear();
 }
 
-
 TestBlacklist::TestBlacklist()
-    : blacklist_(NULL),
+    : blacklist_(nullptr),
       blacklist_db_(new FakeSafeBrowsingDatabaseManager(true)),
-      scoped_blacklist_db_(blacklist_db_) {
-}
+      scoped_blacklist_db_(blacklist_db_) {}
 
 TestBlacklist::TestBlacklist(Blacklist* blacklist)
-    : blacklist_(NULL),
+    : blacklist_(nullptr),
       blacklist_db_(new FakeSafeBrowsingDatabaseManager(true)),
       scoped_blacklist_db_(blacklist_db_) {
   Attach(blacklist);

chrome/browser/gcm/gcm_profile_service_unittest.cc

@@ -143,11 +143,10 @@ class GCMProfileServiceTest : public testing::Test {
 };
 
 GCMProfileServiceTest::GCMProfileServiceTest()
-    : gcm_profile_service_(NULL),
+    : gcm_profile_service_(nullptr),
       gcm_app_handler_(new FakeGCMAppHandler),
       registration_result_(GCMClient::UNKNOWN_ERROR),
-      send_result_(GCMClient::UNKNOWN_ERROR) {
-}
+      send_result_(GCMClient::UNKNOWN_ERROR) {}
 
 GCMProfileServiceTest::~GCMProfileServiceTest() {
 }

chrome/browser/importer/external_process_importer_host.cc

@@ -23,13 +23,13 @@ using content::BrowserThread;
 
 ExternalProcessImporterHost::ExternalProcessImporterHost()
     : headless_(false),
-      parent_window_(NULL),
-      observer_(NULL),
-      profile_(NULL),
+      parent_window_(nullptr),
+      observer_(nullptr),
+      profile_(nullptr),
       waiting_for_bookmarkbar_model_(false),
       installed_bookmark_observer_(false),
       is_source_readable_(true),
-      client_(NULL),
+      client_(nullptr),
       items_(0),
       cancelled_(false) {}
 

chrome/browser/media/router/discovery/mdns/dns_sd_registry_unittest.cc

@@ -14,7 +14,7 @@ namespace media_router {
 
 class MockDnsSdDeviceLister : public DnsSdDeviceLister {
  public:
-  MockDnsSdDeviceLister() : DnsSdDeviceLister(NULL, NULL, "") {}
+  MockDnsSdDeviceLister() : DnsSdDeviceLister(nullptr, nullptr, "") {}
   ~MockDnsSdDeviceLister() override {}
 
   MOCK_METHOD0(Discover, void());
@@ -22,7 +22,7 @@ class MockDnsSdDeviceLister : public DnsSdDeviceLister {
 
 class TestDnsSdRegistry : public DnsSdRegistry {
  public:
-  TestDnsSdRegistry() : DnsSdRegistry(NULL), delegate_(NULL) {}
+  TestDnsSdRegistry() : DnsSdRegistry(nullptr), delegate_(nullptr) {}
   ~TestDnsSdRegistry() override {}
 
   MockDnsSdDeviceLister* GetListerForService(const std::string& service_type) {

chrome/browser/media/webrtc/fake_desktop_media_list.cc

@@ -14,7 +14,7 @@
 using content::DesktopMediaID;
 
 FakeDesktopMediaList::FakeDesktopMediaList(DesktopMediaID::Type type)
-    : observer_(NULL), type_(type) {}
+    : observer_(nullptr), type_(type) {}
 FakeDesktopMediaList::~FakeDesktopMediaList() {}
 
 void FakeDesktopMediaList::AddSource(int id) {

chrome/browser/media_galleries/gallery_watch_manager_unittest.cc

@@ -61,10 +61,10 @@ class GalleryWatchManagerTest : public GalleryWatchManagerObserver,
         test_user_manager_(std::make_unique<chromeos::ScopedTestUserManager>()),
 #endif
         profile_(new TestingProfile()),
-        gallery_prefs_(NULL),
+        gallery_prefs_(nullptr),
         expect_gallery_changed_(false),
         expect_gallery_watch_dropped_(false),
-        pending_loop_(NULL) {
+        pending_loop_(nullptr) {
   }
 
   ~GalleryWatchManagerTest() override {}

chrome/browser/media_galleries/media_galleries_permission_controller.cc

@@ -100,7 +100,7 @@ MediaGalleriesPermissionController::MediaGalleriesPermissionController(
     MediaGalleriesPreferences* preferences,
     const CreateDialogCallback& create_dialog_callback,
     const base::Closure& on_finish)
-    : web_contents_(NULL),
+    : web_contents_(nullptr),
       extension_(&extension),
       on_finish_(on_finish),
       preferences_(preferences),

chrome/browser/media_galleries/media_galleries_permission_controller_unittest.cc

@@ -44,9 +44,9 @@ std::string GalleryName(const MediaGalleryPrefInfo& gallery) {
 class MediaGalleriesPermissionControllerTest : public ::testing::Test {
  public:
   MediaGalleriesPermissionControllerTest()
-      : dialog_(NULL),
+      : dialog_(nullptr),
         dialog_update_count_at_destruction_(0),
-        controller_(NULL),
+        controller_(nullptr),
         profile_(new TestingProfile()) {}
 
   ~MediaGalleriesPermissionControllerTest() override {

chrome/browser/net/dns_probe_browsertest.cc

@@ -423,8 +423,8 @@ class DnsProbeBrowserTest : public InProcessBrowserTest {
 
 DnsProbeBrowserTest::DnsProbeBrowserTest()
     : helper_(new DnsProbeBrowserTestIOThreadHelper()),
-      active_browser_(NULL),
-      monitored_tab_helper_(NULL) {
+      active_browser_(nullptr),
+      monitored_tab_helper_(nullptr) {
   NavigationCorrectionTabObserver::SetAllowEnableCorrectionsForTesting(true);
 }
 

chrome/browser/policy/policy_browsertest.cc

@@ -403,7 +403,7 @@ class TestAddAppWindowObserver
 
 TestAddAppWindowObserver::TestAddAppWindowObserver(
     extensions::AppWindowRegistry* registry)
-    : registry_(registry), window_(NULL) {
+    : registry_(registry), window_(nullptr) {
   registry_->AddObserver(this);
 }
 

chrome/browser/process_singleton_posix_unittest.cc

@@ -74,7 +74,7 @@ class ProcessSingletonPosixTest : public testing::Test {
                     base::WaitableEvent::InitialState::NOT_SIGNALED),
         signal_event_(base::WaitableEvent::ResetPolicy::MANUAL,
                       base::WaitableEvent::InitialState::NOT_SIGNALED),
-        process_singleton_on_thread_(NULL) {}
+        process_singleton_on_thread_(nullptr) {}
 
   void SetUp() override {
     testing::Test::SetUp();

chrome/browser/search_engines/chrome_template_url_service_client.cc

@@ -8,8 +8,7 @@
 
 ChromeTemplateURLServiceClient::ChromeTemplateURLServiceClient(
     history::HistoryService* history_service)
-    : owner_(NULL),
-      history_service_(history_service) {
+    : owner_(nullptr), history_service_(history_service) {
   // TODO(sky): bug 1166191. The keywords should be moved into the history
   // db, which will mean we no longer need this notification and the history
   // backend can handle automatically adding the search terms as the user

chrome/browser/sessions/tab_restore_service_unittest.cc

@@ -80,7 +80,7 @@ class TabRestoreServiceImplTest : public ChromeRenderViewHostTestHarness {
         user_agent_override_(blink::UserAgentOverride::UserAgentOnly(
             "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.19"
             " (KHTML, like Gecko) Chrome/18.0.1025.45 Safari/535.19")),
-        time_factory_(NULL),
+        time_factory_(nullptr),
         window_id_(SessionID::FromSerializedValue(1)),
         tab_id_(SessionID::FromSerializedValue(2)) {
     user_agent_override_.ua_metadata_override.emplace();

chrome/browser/ssl/ssl_browsertest.cc

@@ -2097,7 +2097,7 @@ IN_PROC_BROWSER_TEST_F(SSLUITestWithHttpDangerous, MarkBlobAsNonSecure) {
 #if defined(USE_NSS_CERTS)
 class SSLUITestWithClientCert : public SSLUITestBase {
  public:
-  SSLUITestWithClientCert() : cert_db_(NULL) {}
+  SSLUITestWithClientCert() : cert_db_(nullptr) {}
 
   void SetUpOnMainThread() override {
     SSLUITestBase::SetUpOnMainThread();

chrome/browser/themes/theme_syncable_service_unittest.cc

@@ -176,7 +176,7 @@ scoped_refptr<extensions::Extension> MakeThemeExtension(
 
 class ThemeSyncableServiceTest : public testing::Test {
  protected:
-  ThemeSyncableServiceTest() : fake_theme_service_(NULL) {}
+  ThemeSyncableServiceTest() : fake_theme_service_(nullptr) {}
 
   ~ThemeSyncableServiceTest() override {}
 

chrome/browser/ui/aura/tab_contents/web_drag_bookmark_handler_aura.cc

@@ -15,9 +15,7 @@
 using content::WebContents;
 
 WebDragBookmarkHandlerAura::WebDragBookmarkHandlerAura()
-    : bookmark_tab_helper_(NULL),
-      web_contents_(NULL) {
-}
+    : bookmark_tab_helper_(nullptr), web_contents_(nullptr) {}
 
 WebDragBookmarkHandlerAura::~WebDragBookmarkHandlerAura() {
 }

chrome/browser/ui/autofill/autofill_popup_controller_unittest.cc

@@ -227,7 +227,7 @@ class AutofillPopupControllerUnitTest : public ChromeRenderViewHostTestHarness {
  public:
   AutofillPopupControllerUnitTest()
       : autofill_client_(new MockAutofillClient()),
-        autofill_popup_controller_(NULL) {}
+        autofill_popup_controller_(nullptr) {}
   ~AutofillPopupControllerUnitTest() override = default;
 
   void SetUp() override {

chrome/browser/ui/bookmarks/bookmark_tab_helper.cc

@@ -89,8 +89,8 @@ bool BookmarkTabHelper::HasObserver(BookmarkTabHelperObserver* observer) const {
 BookmarkTabHelper::BookmarkTabHelper(content::WebContents* web_contents)
     : content::WebContentsObserver(web_contents),
       is_starred_(false),
-      bookmark_model_(NULL),
-      bookmark_drag_(NULL) {
+      bookmark_model_(nullptr),
+      bookmark_drag_(nullptr) {
   bookmark_model_ = BookmarkModelFactory::GetForBrowserContext(
       web_contents->GetBrowserContext());
   if (bookmark_model_)

chrome/browser/ui/browser_unittest.cc

@@ -333,7 +333,7 @@ class BrowserBookmarkBarTest : public BrowserWithTestWindowTest {
   class BookmarkBarStateTestBrowserWindow : public TestBrowserWindow {
    public:
     BookmarkBarStateTestBrowserWindow()
-        : browser_(NULL), bookmark_bar_state_(BookmarkBar::HIDDEN) {}
+        : browser_(nullptr), bookmark_bar_state_(BookmarkBar::HIDDEN) {}
     ~BookmarkBarStateTestBrowserWindow() override {}
 
     void set_browser(Browser* browser) { browser_ = browser; }

chrome/browser/ui/exclusive_access/fullscreen_controller_state_unittest.cc

@@ -84,9 +84,7 @@ class FullscreenControllerTestWindow : public TestBrowserWindow,
 };
 
 FullscreenControllerTestWindow::FullscreenControllerTestWindow()
-    : state_(NORMAL),
-      browser_(NULL) {
-}
+    : state_(NORMAL), browser_(nullptr) {}
 
 void FullscreenControllerTestWindow::EnterFullscreen(
     const GURL& url,

chrome/browser/ui/search_engines/template_url_table_model.cc

@@ -18,7 +18,7 @@
 
 TemplateURLTableModel::TemplateURLTableModel(
     TemplateURLService* template_url_service)
-    : observer_(NULL), template_url_service_(template_url_service) {
+    : observer_(nullptr), template_url_service_(template_url_service) {
   DCHECK(template_url_service);
   template_url_service_->AddObserver(this);
   template_url_service_->Load();

chrome/browser/ui/startup/startup_browser_creator_impl.cc

@@ -347,8 +347,8 @@ StartupBrowserCreatorImpl::StartupBrowserCreatorImpl(
     chrome::startup::IsFirstRun is_first_run)
     : cur_dir_(cur_dir),
       command_line_(command_line),
-      profile_(NULL),
-      browser_creator_(NULL),
+      profile_(nullptr),
+      browser_creator_(nullptr),
       is_first_run_(is_first_run == chrome::startup::IS_FIRST_RUN) {}
 
 StartupBrowserCreatorImpl::StartupBrowserCreatorImpl(
@@ -358,7 +358,7 @@ StartupBrowserCreatorImpl::StartupBrowserCreatorImpl(
     chrome::startup::IsFirstRun is_first_run)
     : cur_dir_(cur_dir),
       command_line_(command_line),
-      profile_(NULL),
+      profile_(nullptr),
       browser_creator_(browser_creator),
       is_first_run_(is_first_run == chrome::startup::IS_FIRST_RUN) {}
 

chrome/browser/ui/sync/profile_signin_confirmation_helper_unittest.cc

@@ -127,9 +127,7 @@ static scoped_refptr<extensions::Extension> CreateExtension(
 class ProfileSigninConfirmationHelperTest : public testing::Test {
  public:
   ProfileSigninConfirmationHelperTest()
-      : user_prefs_(NULL),
-        model_(NULL) {
-  }
+      : user_prefs_(nullptr), model_(nullptr) {}
 
   void SetUp() override {
     ASSERT_TRUE(profile_dir_.CreateUniqueTempDir());

chrome/browser/ui/tab_modal_confirm_dialog_browsertest.cc

@@ -54,8 +54,8 @@ void MockTabModalConfirmDialogDelegate::OnClosed() {
 }
 
 TabModalConfirmDialogTest::TabModalConfirmDialogTest()
-    : delegate_(NULL),
-      dialog_(NULL),
+    : delegate_(nullptr),
+      dialog_(nullptr),
       accepted_count_(0),
       canceled_count_(0),
       closed_count_(0) {}

chrome/browser/ui/tabs/pinned_tab_service_unittest.cc

@@ -35,7 +35,7 @@ PinnedTabService* BuildForProfile(Profile* profile) {
 
 class PinnedTabServiceTest : public BrowserWithTestWindowTest {
  public:
-  PinnedTabServiceTest() : pinned_tab_service_(NULL) {}
+  PinnedTabServiceTest() : pinned_tab_service_(nullptr) {}
 
  protected:
   TestingProfile* CreateProfile() override {

chrome/browser/ui/views/bookmarks/bookmark_context_menu.cc

@@ -61,7 +61,7 @@ BookmarkContextMenu::BookmarkContextMenu(
                                          views::MenuRunner::HAS_MNEMONICS |
                                              views::MenuRunner::IS_NESTED |
                                              views::MenuRunner::CONTEXT_MENU)),
-      observer_(NULL),
+      observer_(nullptr),
       close_on_remove_(close_on_remove) {
   ui::SimpleMenuModel* menu_model = controller_->menu_model();
   for (int i = 0; i < menu_model->GetItemCount(); ++i) {

chrome/browser/ui/views/bookmarks/bookmark_menu_delegate.cc

@@ -75,13 +75,12 @@ BookmarkMenuDelegate::BookmarkMenuDelegate(Browser* browser,
       profile_(browser->profile()),
       page_navigator_(navigator),
       parent_(parent),
-      menu_(NULL),
-      parent_menu_item_(NULL),
+      menu_(nullptr),
+      parent_menu_item_(nullptr),
       next_menu_id_(IDC_FIRST_BOOKMARK_MENU),
-      real_delegate_(NULL),
+      real_delegate_(nullptr),
       is_mutating_model_(false),
-      location_(BOOKMARK_LAUNCH_LOCATION_NONE) {
-}
+      location_(BOOKMARK_LAUNCH_LOCATION_NONE) {}
 
 BookmarkMenuDelegate::~BookmarkMenuDelegate() {
   GetBookmarkModel()->RemoveObserver(this);

chrome/browser/ui/views/bookmarks/bookmark_menu_delegate_unittest.cc

@@ -23,7 +23,7 @@ using bookmarks::BookmarkNode;
 
 class BookmarkMenuDelegateTest : public BrowserWithTestWindowTest {
  public:
-  BookmarkMenuDelegateTest() : model_(NULL) {}
+  BookmarkMenuDelegateTest() : model_(nullptr) {}
 
   void SetUp() override {
     BrowserWithTestWindowTest::SetUp();

chrome/browser/ui/views/download/download_started_animation_views.cc

@@ -60,7 +60,7 @@ class DownloadStartedAnimationViews : public gfx::LinearAnimation,
 
 DownloadStartedAnimationViews::DownloadStartedAnimationViews(
     content::WebContents* web_contents)
-    : gfx::LinearAnimation(kMoveTime, kFrameRateHz, NULL), popup_(NULL) {
+    : gfx::LinearAnimation(kMoveTime, kFrameRateHz, nullptr), popup_(nullptr) {
   gfx::ImageSkia download_image =
       gfx::CreateVectorIcon(kFileDownloadShelfIcon, 72, gfx::kGoogleBlue500);
 

chrome/browser/ui/views/extensions/browser_action_drag_data.cc

@@ -21,13 +21,10 @@ const char kClipboardFormatString[] = "chromium/x-browser-actions";
 }
 
 BrowserActionDragData::BrowserActionDragData()
-    : profile_(NULL), index_(static_cast<size_t>(-1)) {
-}
+    : profile_(nullptr), index_(static_cast<size_t>(-1)) {}
 
-BrowserActionDragData::BrowserActionDragData(
-    const std::string& id, int index)
-    : profile_(NULL), id_(id), index_(index) {
-}
+BrowserActionDragData::BrowserActionDragData(const std::string& id, int index)
+    : profile_(nullptr), id_(id), index_(index) {}
 
 bool BrowserActionDragData::GetDropFormats(
     std::set<ui::ClipboardFormatType>* format_types) {

chrome/browser/ui/views/javascript_app_modal_event_blocker_x11.cc

@@ -25,8 +25,7 @@ aura::Window* GetTopmostTransientParent(aura::Window* window) {
 
 JavascriptAppModalEventBlockerX11::JavascriptAppModalEventBlockerX11(
     aura::Window* modal_window)
-    : modal_window_(modal_window),
-      browser_view_with_modal_dialog_(NULL) {
+    : modal_window_(modal_window), browser_view_with_modal_dialog_(nullptr) {
   aura::Window* topmost_transient_parent =
       GetTopmostTransientParent(modal_window);
   browser_view_with_modal_dialog_ =

chrome/browser/ui/views/ssl_client_certificate_selector_browsertest.cc

@@ -46,7 +46,7 @@ class SSLClientCertificateSelectorTest : public InProcessBrowserTest {
       : io_loop_finished_event_(
             base::WaitableEvent::ResetPolicy::AUTOMATIC,
             base::WaitableEvent::InitialState::NOT_SIGNALED),
-        selector_(NULL) {}
+        selector_(nullptr) {}
 
   void SetUpInProcessBrowserTestFixture() override {
     base::FilePath certs_dir = net::GetTestCertsDirectory();

chrome/browser/ui/views/tabs/tab_drag_controller.cc

@@ -398,8 +398,8 @@ TabDragController::TabDragController()
       was_source_maximized_(false),
       was_source_fullscreen_(false),
       did_restore_window_(false),
-      tab_strip_to_attach_to_after_exit_(NULL),
-      move_loop_widget_(NULL),
+      tab_strip_to_attach_to_after_exit_(nullptr),
+      move_loop_widget_(nullptr),
       is_mutating_(false),
       attach_x_(-1),
       attach_index_(-1) {

chrome/browser/ui/webui/settings/custom_home_pages_table_model.cc

@@ -45,9 +45,8 @@ struct CustomHomePagesTableModel::Entry {
 
 CustomHomePagesTableModel::CustomHomePagesTableModel(Profile* profile)
     : profile_(profile),
-      observer_(NULL),
-      num_outstanding_title_lookups_(0) {
-}
+      observer_(nullptr),
+      num_outstanding_title_lookups_(0) {}
 
 CustomHomePagesTableModel::~CustomHomePagesTableModel() {
 }

chrome/common/service_process_util.cc

@@ -153,7 +153,7 @@ std::unique_ptr<base::CommandLine> CreateServiceProcessCommandLine() {
   return command_line;
 }
 
-ServiceProcessState::ServiceProcessState() : state_(NULL) {
+ServiceProcessState::ServiceProcessState() : state_(nullptr) {
   autorun_command_line_ = CreateServiceProcessCommandLine();
   CreateState();
 }

chrome/renderer/net/net_error_helper_core_unittest.cc

@@ -171,7 +171,7 @@ class NetErrorHelperCoreTest : public testing::Test,
                                public NetErrorHelperCore::Delegate {
  public:
   NetErrorHelperCoreTest()
-      : timer_(NULL),
+      : timer_(nullptr),
         update_count_(0),
         error_html_update_count_(0),
         reload_count_(0),

chrome/service/cloud_print/cloud_print_url_fetcher.cc

@@ -129,7 +129,7 @@ CloudPrintURLFetcher::Delegate::HandleJSONData(const net::URLFetcher* source,
 
 CloudPrintURLFetcher::CloudPrintURLFetcher(
     const net::PartialNetworkTrafficAnnotationTag& partial_traffic_annotation)
-    : delegate_(NULL),
+    : delegate_(nullptr),
       num_retries_(0),
       type_(REQUEST_MAX),
       partial_traffic_annotation_(partial_traffic_annotation) {}

chrome/service/cloud_print/printer_job_handler_unittest.cc

@@ -630,20 +630,19 @@ void PrinterJobHandlerTest::TearDown() {
   CloudPrintURLFetcher::set_test_factory(nullptr);
 }
 
-MockPrintServerWatcher::MockPrintServerWatcher() : delegate_(NULL) {
+MockPrintServerWatcher::MockPrintServerWatcher() : delegate_(nullptr) {
   ON_CALL(*this, StartWatching(_))
       .WillByDefault(DoAll(SaveArg<0>(&delegate_), Return(true)));
   ON_CALL(*this, StopWatching()).WillByDefault(Return(true));
 }
 
-
-MockPrinterWatcher::MockPrinterWatcher() : delegate_(NULL) {
+MockPrinterWatcher::MockPrinterWatcher() : delegate_(nullptr) {
   ON_CALL(*this, StartWatching(_))
       .WillByDefault(DoAll(SaveArg<0>(&delegate_), Return(true)));
   ON_CALL(*this, StopWatching()).WillByDefault(Return(true));
 }
 
-MockJobSpooler::MockJobSpooler() : delegate_(NULL) {
+MockJobSpooler::MockJobSpooler() : delegate_(nullptr) {
   ON_CALL(*this, Spool(_, _, _, _, _, _, _, _))
       .WillByDefault(DoAll(SaveArg<7>(&delegate_), Return(true)));
 }

chrome/test/chromedriver/chrome/devtools_client_impl.cc

@@ -86,7 +86,7 @@ DevToolsClientImpl::DevToolsClientImpl(const SyncWebSocketFactory& factory,
       id_(id),
       frontend_closer_func_(base::Bind(&FakeCloseFrontends)),
       parser_func_(base::Bind(&internal::ParseInspectorMessage)),
-      unnotified_event_(NULL),
+      unnotified_event_(nullptr),
       next_id_(1),
       stack_count_(0) {
   socket_->SetId(id_);
@@ -106,7 +106,7 @@ DevToolsClientImpl::DevToolsClientImpl(
       id_(id),
       frontend_closer_func_(frontend_closer_func),
       parser_func_(base::Bind(&internal::ParseInspectorMessage)),
-      unnotified_event_(NULL),
+      unnotified_event_(nullptr),
       next_id_(1),
       stack_count_(0) {
   socket_->SetId(id_);
@@ -122,7 +122,7 @@ DevToolsClientImpl::DevToolsClientImpl(DevToolsClientImpl* parent,
       id_(session_id),
       frontend_closer_func_(base::BindRepeating(&FakeCloseFrontends)),
       parser_func_(base::BindRepeating(&internal::ParseInspectorMessage)),
-      unnotified_event_(NULL),
+      unnotified_event_(nullptr),
       next_id_(1),
       stack_count_(0) {
   parent->children_[session_id] = this;
@@ -143,7 +143,7 @@ DevToolsClientImpl::DevToolsClientImpl(
       id_(id),
       frontend_closer_func_(frontend_closer_func),
       parser_func_(parser_func),
-      unnotified_event_(NULL),
+      unnotified_event_(nullptr),
       next_id_(1),
       stack_count_(0) {
   socket_->SetId(id_);

chrome/test/chromedriver/chrome/javascript_dialog_manager_unittest.cc

@@ -86,7 +86,7 @@ namespace {
 
 class FakeDevToolsClient : public StubDevToolsClient {
  public:
-  FakeDevToolsClient() : listener_(NULL), closing_count_(0) {}
+  FakeDevToolsClient() : listener_(nullptr), closing_count_(0) {}
   ~FakeDevToolsClient() override {}
 
   void set_closing_count(int closing_count) {

chrome/test/chromedriver/chrome/network_conditions_override_manager.cc

@@ -11,8 +11,7 @@
 
 NetworkConditionsOverrideManager::NetworkConditionsOverrideManager(
     DevToolsClient* client)
-    : client_(client),
-      overridden_network_conditions_(NULL) {
+    : client_(client), overridden_network_conditions_(nullptr) {
   client_->AddListener(this);
 }
 

chrome/utility/image_writer/image_writer_unittest.cc

@@ -70,7 +70,7 @@ class MockHandler : public ImageWriterHandler {
 // the write completes.
 class VerifyingHandler : public MockHandler {
  public:
-  VerifyingHandler() : image_writer_(NULL), verified_(false) {}
+  VerifyingHandler() : image_writer_(nullptr), verified_(false) {}
 
   void SendSucceeded() override {
     MockHandler::SendSucceeded();

chrome/utility/importer/nss_decryptor_system_nss.cc

@@ -14,7 +14,7 @@
 #include "base/strings/sys_string_conversions.h"
 #include "crypto/nss_util.h"
 
-NSSDecryptor::NSSDecryptor() : is_nss_initialized_(false), db_slot_(NULL) {}
+NSSDecryptor::NSSDecryptor() : is_nss_initialized_(false), db_slot_(nullptr) {}
 NSSDecryptor::~NSSDecryptor() {
   if (db_slot_) {
     // Deliberately leave the user db open, just in case we need to open more

components/nacl/browser/nacl_file_host_unittest.cc

@@ -58,7 +58,7 @@ class NaClFileHostTest : public testing::Test {
   DISALLOW_COPY_AND_ASSIGN(NaClFileHostTest);
 };
 
-NaClFileHostTest::NaClFileHostTest() : nacl_browser_delegate_(NULL) {}
+NaClFileHostTest::NaClFileHostTest() : nacl_browser_delegate_(nullptr) {}
 
 NaClFileHostTest::~NaClFileHostTest() {
 }

components/nacl/browser/nacl_process_host.cc

@@ -222,7 +222,7 @@ NaClProcessHost::NaClProcessHost(
 #if defined(OS_WIN)
       process_launched_by_broker_(false),
 #endif
-      reply_msg_(NULL),
+      reply_msg_(nullptr),
 #if defined(OS_WIN)
       debug_exception_handler_requested_(false),
 #endif

components/nacl/browser/pnacl_host.cc

@@ -81,14 +81,13 @@ PnaclHost* PnaclHost::GetInstance() {
 PnaclHost::PendingTranslation::PendingTranslation()
     : process_handle(base::kNullProcessHandle),
       render_view_id(0),
-      nexe_fd(NULL),
+      nexe_fd(nullptr),
       got_nexe_fd(false),
       got_cache_reply(false),
       got_cache_hit(false),
       is_incognito(false),
       callback(NexeFdCallback()),
-      cache_info(nacl::PnaclCacheInfo()) {
-}
+      cache_info(nacl::PnaclCacheInfo()) {}
 
 PnaclHost::PendingTranslation::PendingTranslation(
     const PendingTranslation& other) = default;

components/nacl/browser/pnacl_host_unittest.cc

@@ -36,7 +36,7 @@ const size_t kBufferSize = 16u;
 class PnaclHostTest : public testing::Test {
  protected:
   PnaclHostTest()
-      : host_(NULL),
+      : host_(nullptr),
         temp_callback_count_(0),
         write_callback_count_(0),
         task_environment_(content::BrowserTaskEnvironment::IO_MAINLOOP) {}

components/nacl/browser/pnacl_translation_cache.cc

@@ -145,7 +145,7 @@ PnaclTranslationCacheEntry::PnaclTranslationCacheEntry(
     bool is_read)
     : cache_(cache),
       key_(key),
-      entry_(NULL),
+      entry_(nullptr),
       step_(UNINITIALIZED),
       is_read_(is_read) {}
 

components/nacl/renderer/plugin/pnacl_translate_thread.cc

@@ -59,18 +59,18 @@ void GetSubzeroCommandLine(std::vector<std::string>* args,
 }  // namespace
 
 PnaclTranslateThread::PnaclTranslateThread()
-    : compiler_subprocess_(NULL),
-      ld_subprocess_(NULL),
+    : compiler_subprocess_(nullptr),
+      ld_subprocess_(nullptr),
       compiler_subprocess_active_(false),
       ld_subprocess_active_(false),
       buffer_cond_(&cond_mu_),
       done_(false),
       compile_time_(0),
-      obj_files_(NULL),
+      obj_files_(nullptr),
       num_threads_(0),
-      nexe_file_(NULL),
-      coordinator_error_info_(NULL),
-      coordinator_(NULL) {}
+      nexe_file_(nullptr),
+      coordinator_error_info_(nullptr),
+      coordinator_(nullptr) {}
 
 void PnaclTranslateThread::SetupState(
     const pp::CompletionCallback& finish_callback,

components/nacl/renderer/pnacl_translation_resource_host.cc

@@ -14,8 +14,7 @@ using ppapi::PpapiGlobals;
 
 PnaclTranslationResourceHost::PnaclTranslationResourceHost(
     scoped_refptr<base::SingleThreadTaskRunner> io_task_runner)
-    : io_task_runner_(io_task_runner), sender_(NULL) {
-}
+    : io_task_runner_(io_task_runner), sender_(nullptr) {}
 
 PnaclTranslationResourceHost::~PnaclTranslationResourceHost() {
   DCHECK(io_task_runner_->BelongsToCurrentThread());

content/public/common/profiling.cc

@@ -71,7 +71,7 @@ void FlushProfilingData(base::Thread* thread) {
 
 class ProfilingThreadControl {
  public:
-  ProfilingThreadControl() : thread_(NULL) {}
+  ProfilingThreadControl() : thread_(nullptr) {}
 
   void Start() {
     base::AutoLock locked(lock_);

device/bluetooth/bluez/bluetooth_gatt_bluez_unittest.cc

@@ -97,7 +97,7 @@ void AddDeviceFilterWithUUID(BluetoothDiscoveryFilter* filter,
 class BluetoothGattBlueZTest : public testing::Test {
  public:
   BluetoothGattBlueZTest()
-      : fake_bluetooth_gatt_service_client_(NULL),
+      : fake_bluetooth_gatt_service_client_(nullptr),
         success_callback_count_(0),
         error_callback_count_(0) {}
 

extensions/browser/api/declarative/rules_registry_service.cc

@@ -42,7 +42,7 @@ const int RulesRegistryService::kInvalidRulesRegistryID = -1;
 
 RulesRegistryService::RulesRegistryService(content::BrowserContext* context)
     : current_rules_registry_id_(kDefaultRulesRegistryID),
-      content_rules_registry_(NULL),
+      content_rules_registry_(nullptr),
       browser_context_(context) {
   if (browser_context_) {
     extension_registry_observer_.Add(ExtensionRegistry::Get(browser_context_));

extensions/browser/api/networking_private/networking_private_linux.cc

@@ -135,7 +135,7 @@ void GetCachedNetworkPropertiesCallback(
 }  // namespace
 
 NetworkingPrivateLinux::NetworkingPrivateLinux()
-    : dbus_thread_("Networking Private DBus"), network_manager_proxy_(NULL) {
+    : dbus_thread_("Networking Private DBus"), network_manager_proxy_(nullptr) {
   base::Thread::Options thread_options(base::MessagePumpType::IO, 0);
 
   dbus_thread_.StartWithOptions(thread_options);

extensions/browser/api/system_storage/system_storage_eject_apitest.cc

@@ -34,7 +34,7 @@ using storage_monitor::TestStorageMonitor;
 
 class SystemStorageEjectApiTest : public extensions::ShellApiTest {
  public:
-  SystemStorageEjectApiTest() : monitor_(NULL) {}
+  SystemStorageEjectApiTest() : monitor_(nullptr) {}
   ~SystemStorageEjectApiTest() override {}
 
  protected:

extensions/browser/api/test/test_api.cc

@@ -129,7 +129,7 @@ void TestGetConfigFunction::set_test_config_state(
 }
 
 TestGetConfigFunction::TestConfigState::TestConfigState()
-    : config_state_(NULL) {}
+    : config_state_(nullptr) {}
 
 // static
 TestGetConfigFunction::TestConfigState*

extensions/test/result_catcher.cc

@@ -11,8 +11,7 @@
 
 namespace extensions {
 
-ResultCatcher::ResultCatcher()
-    : browser_context_restriction_(NULL) {
+ResultCatcher::ResultCatcher() : browser_context_restriction_(nullptr) {
   registrar_.Add(this,
                  extensions::NOTIFICATION_EXTENSION_TEST_PASSED,
                  content::NotificationService::AllSources());

gin/array_buffer.cc

@@ -151,10 +151,7 @@ void ArrayBuffer::Private::SecondWeakCallback(
 
 // ArrayBuffer ----------------------------------------------------------------
 
-ArrayBuffer::ArrayBuffer()
-    : bytes_(0),
-      num_bytes_(0) {
-}
+ArrayBuffer::ArrayBuffer() : bytes_(nullptr), num_bytes_(0) {}
 
 ArrayBuffer::ArrayBuffer(v8::Isolate* isolate,
                          v8::Local<v8::ArrayBuffer> array) {

gin/handle.h

@@ -16,7 +16,7 @@ namespace gin {
 template<typename T>
 class Handle {
  public:
-  Handle() : object_(NULL) {}
+  Handle() : object_(nullptr) {}
 
   Handle(v8::Local<v8::Value> wrapper, T* object)
     : wrapper_(wrapper),

gin/per_context_data.cc

@@ -11,8 +11,7 @@ namespace gin {
 
 PerContextData::PerContextData(ContextHolder* context_holder,
                                v8::Local<v8::Context> context)
-    : context_holder_(context_holder),
-      runner_(NULL) {
+    : context_holder_(context_holder), runner_(nullptr) {
   context->SetAlignedPointerInEmbedderData(
       kPerContextDataStartIndex + kEmbedderNativeGin, this);
 }

headless/lib/browser/headless_focus_client.cc

@@ -10,7 +10,7 @@
 namespace headless {
 
 HeadlessFocusClient::HeadlessFocusClient()
-    : focused_window_(NULL), observer_manager_(this) {}
+    : focused_window_(nullptr), observer_manager_(this) {}
 
 HeadlessFocusClient::~HeadlessFocusClient() = default;
 

ipc/ipc_fuzzing_tests.cc

@@ -141,8 +141,7 @@ TEST(IPCMessageIntegrity, DISABLED_ReadVectorTooLarge3) {
 
 class SimpleListener : public IPC::Listener {
  public:
-  SimpleListener() : other_(NULL) {
-  }
+  SimpleListener() : other_(nullptr) {}
   void Init(IPC::Sender* s) {
     other_ = s;
   }
@@ -223,8 +222,7 @@ class FuzzerServerListener : public SimpleListener {
 
 class FuzzerClientListener : public SimpleListener {
  public:
-  FuzzerClientListener() : last_msg_(NULL) {
-  }
+  FuzzerClientListener() : last_msg_(nullptr) {}
 
   bool OnMessageReceived(const IPC::Message& msg) override {
     last_msg_ = new IPC::Message(msg);

ipc/ipc_logging.cc

@@ -48,9 +48,9 @@ Logging::Logging()
       enabled_on_stderr_(false),
       enabled_color_(false),
       queue_invoke_later_pending_(false),
-      sender_(NULL),
+      sender_(nullptr),
       main_thread_(base::ThreadTaskRunnerHandle::Get()),
-      consumer_(NULL) {
+      consumer_(nullptr) {
 #if defined(OS_WIN)
   // getenv triggers an unsafe warning. Simply check how big of a buffer
   // would be needed to fetch the value to see if the enviornment variable is

ipc/ipc_mojo_perftest.cc

@@ -42,7 +42,7 @@ class PerformanceChannelListener : public Listener {
  public:
   explicit PerformanceChannelListener(const std::string& label)
       : label_(label),
-        sender_(NULL),
+        sender_(nullptr),
         msg_count_(0),
         msg_size_(0),
         sync_(false),

ipc/ipc_perftest_util.cc

@@ -19,7 +19,7 @@ scoped_refptr<base::SingleThreadTaskRunner> GetIOThreadTaskRunner() {
       static_cast<base::SingleThreadTaskRunner*>(runner.get()));
 }
 
-ChannelReflectorListener::ChannelReflectorListener() : channel_(NULL) {
+ChannelReflectorListener::ChannelReflectorListener() : channel_(nullptr) {
   VLOG(1) << "Client listener up";
 }
 

ipc/ipc_sync_channel_unittest.cc

@@ -56,7 +56,7 @@ class Worker : public Listener, public Sender {
         mode_(mode),
         ipc_thread_((thread_name + "_ipc").c_str()),
         listener_thread_((thread_name + "_listener").c_str()),
-        overrided_thread_(NULL),
+        overrided_thread_(nullptr),
         shutdown_event_(base::WaitableEvent::ResetPolicy::MANUAL,
                         base::WaitableEvent::InitialState::NOT_SIGNALED),
         is_shutdown_(false) {}
@@ -73,7 +73,7 @@ class Worker : public Listener, public Sender {
         mode_(mode),
         ipc_thread_("ipc thread"),
         listener_thread_("listener thread"),
-        overrided_thread_(NULL),
+        overrided_thread_(nullptr),
         shutdown_event_(base::WaitableEvent::ResetPolicy::MANUAL,
                         base::WaitableEvent::InitialState::NOT_SIGNALED),
         is_shutdown_(false) {}
@@ -1770,7 +1770,8 @@ class ReentrantReplyServer1 : public Worker {
 class ReentrantReplyServer2 : public Worker {
  public:
   ReentrantReplyServer2(mojo::ScopedMessagePipeHandle channel_handle)
-      : Worker(std::move(channel_handle), Channel::MODE_SERVER), reply_(NULL) {}
+      : Worker(std::move(channel_handle), Channel::MODE_SERVER),
+        reply_(nullptr) {}
 
  private:
   bool OnMessageReceived(const Message& message) override {

ipc/ipc_test_channel_listener.h

@@ -21,7 +21,7 @@ class TestChannelListener : public Listener {
   static const size_t kLongMessageStringNumBytes = 50000;
   static void SendOneMessage(Sender* sender, const char* text);
 
-  TestChannelListener() : sender_(NULL), messages_left_(50) {}
+  TestChannelListener() : sender_(nullptr), messages_left_(50) {}
   ~TestChannelListener() override {}
 
   bool OnMessageReceived(const Message& message) override;

ipc/sync_socket_unittest.cc

@@ -57,8 +57,7 @@ const size_t kHelloStringLength = base::size(kHelloString);
 // messages from the client.
 class SyncSocketServerListener : public IPC::Listener {
  public:
-  SyncSocketServerListener() : chan_(NULL) {
-  }
+  SyncSocketServerListener() : chan_(nullptr) {}
 
   void Init(IPC::Channel* chan) {
     chan_ = chan;

jingle/glue/thread_wrapper_unittest.cc

@@ -80,9 +80,7 @@ class ThreadWrapperTest : public testing::Test {
   }
 
  protected:
-  ThreadWrapperTest()
-      : thread_(NULL) {
-  }
+  ThreadWrapperTest() : thread_(nullptr) {}
 
   void SetUp() override {
     JingleThreadWrapper::EnsureForCurrentMessageLoop();

jingle/notifier/listener/non_blocking_push_client_unittest.cc

@@ -26,7 +26,7 @@ namespace {
 
 class NonBlockingPushClientTest : public testing::Test {
  protected:
-  NonBlockingPushClientTest() : fake_push_client_(NULL) {}
+  NonBlockingPushClientTest() : fake_push_client_(nullptr) {}
 
   ~NonBlockingPushClientTest() override {}
 

media/audio/audio_output_device.cc

@@ -33,7 +33,7 @@ AudioOutputDevice::AudioOutputDevice(
     const AudioSinkParameters& sink_params,
     base::TimeDelta authorization_timeout)
     : io_task_runner_(io_task_runner),
-      callback_(NULL),
+      callback_(nullptr),
       ipc_(std::move(ipc)),
       state_(IDLE),
       session_id_(sink_params.session_id),