Remove redundant ARC configuration in /components

ARC is now enabled by default, so enabling it at the target level is
redundant and can be removed.

Bug: 733237
Change-Id: I73b360e8311c194e5d9919816c50d994f0405624
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4721409
Auto-Submit: Avi Drissman <avi@chromium.org>
Reviewed-by: Cait Phillips <caitkp@chromium.org>
Commit-Queue: Cait Phillips <caitkp@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1176219}

components/autofill/ios/browser/BUILD.gn

@@ -7,7 +7,6 @@ import("//ios/web/public/js_messaging/optimize_js.gni")
 import("//ios/web/public/js_messaging/optimize_ts.gni")
 
 source_set("browser") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "autofill_agent.h",
     "autofill_agent.mm",
@@ -66,7 +65,6 @@ source_set("browser") {
 }
 
 source_set("util") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "autofill_util.h",
     "autofill_util.mm",
@@ -106,7 +104,6 @@ optimize_ts("suggestion_controller_js") {
 
 source_set("test_support") {
   testonly = true
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "credit_card_save_manager_test_observer_bridge.h",
     "credit_card_save_manager_test_observer_bridge.mm",
@@ -128,7 +125,6 @@ source_set("test_support") {
 
 source_set("unit_tests") {
   testonly = true
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "autofill_agent_unittests.mm",
     "autofill_util_unittests.mm",

components/autofill/ios/form_util/BUILD.gn

@@ -9,7 +9,6 @@ import("//testing/libfuzzer/fuzzer_test.gni")
 import("//testing/test.gni")
 
 source_set("form_util") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "form_activity_observer.h",
     "form_activity_observer_bridge.h",
@@ -32,7 +31,6 @@ source_set("form_util") {
 }
 
 source_set("form_util_feature") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "form_util_java_script_feature.h",
     "form_util_java_script_feature.mm",
@@ -46,7 +44,6 @@ source_set("form_util_feature") {
 }
 
 source_set("form_handler_feature") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "form_handlers_java_script_feature.h",
     "form_handlers_java_script_feature.mm",
@@ -82,7 +79,6 @@ optimize_js("form_handlers_js") {
 
 source_set("test_support") {
   testonly = true
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "autofill_test_with_web_state.h",
     "autofill_test_with_web_state.mm",
@@ -107,7 +103,6 @@ source_set("test_support") {
 
 source_set("unit_tests") {
   testonly = true
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "fill_js_unittest.mm",
     "form_activity_observer_bridge_unittest.mm",
@@ -146,10 +141,7 @@ source_set("unit_tests") {
 }
 if (is_ios) {
   fuzzer_test("form_activity_tab_helper_fuzzer") {
-    additional_configs = [
-      "//build/config/compiler:enable_arc",
-      "//testing/libfuzzer:build_for_ios_clusterfuzz_job",
-    ]
+    additional_configs = [ "//testing/libfuzzer:build_for_ios_clusterfuzz_job" ]
     sources = [ "form_activity_tab_helper_fuzzer.mm" ]
     deps = [
       ":form_util",

components/bookmarks/browser/BUILD.gn

@@ -92,7 +92,6 @@ static_library("browser") {
       "AppKit.framework",
       "Foundation.framework",
     ]
-    configs += [ "//build/config/compiler:enable_arc" ]
   }
 
   if (is_ios) {

components/commerce/ios/browser/BUILD.gn

@@ -22,6 +22,4 @@ static_library("browser") {
   ]
 
   public_deps = [ "//components/commerce/core/internals" ]
-
-  configs += [ "//build/config/compiler:enable_arc" ]
 }

components/crash/core/app/BUILD.gn

@@ -142,10 +142,6 @@ static_library("app") {
     ]
   }
 
-  if (is_apple) {
-    configs += [ "//build/config/compiler:enable_arc" ]
-  }
-
   if (is_mac) {
     sources += [ "crashpad_mac.mm" ]
     deps += [
@@ -330,8 +326,6 @@ source_set("unit_tests") {
     ]
   }
   if (is_ios) {
-    configs += [ "//build/config/compiler:enable_arc" ]
-
     sources += [ "crashpad_ios_unittest.mm" ]
     deps += [
       ":app",

components/cronet/ios/BUILD.gn

@@ -87,10 +87,7 @@ source_set("cronet_sources") {
     deps += [ "//base:i18n" ]
   }
 
-  configs += [
-    ":disable_deprecated_errors",
-    "//build/config/compiler:enable_arc",
-  ]
+  configs += [ ":disable_deprecated_errors" ]
 }
 
 source_set("cronet_sources_with_global_state") {
@@ -168,8 +165,6 @@ static_library("cronet_static") {
   sources = _cronet_sources + [ "ios_global_state_configuration.cc" ]
   public_configs = [ ":cronet_include_config" ]
   public_deps = [ "//components/grpc_support" ]
-
-  configs += [ "//build/config/compiler:enable_arc" ]
 }
 
 # A static library which contains all dependencies of :cronet_static.

components/cronet/ios/cronet_consumer/BUILD.gn

@@ -28,8 +28,6 @@ template("cronet_consumer_template") {
                              "bundle_deps",
                              "framework_dirs",
                            ])
-
-    configs += [ "//build/config/compiler:enable_arc" ]
   }
 }
 

components/cronet/ios/test/BUILD.gn

@@ -43,5 +43,4 @@ test("cronet_test") {
   defines = [ "CRONET_TESTS_IMPLEMENTATION" ]
 
   bundle_deps = [ "//components/cronet/ios:cronet_framework+bundle" ]
-  configs += [ "//build/config/compiler:enable_arc" ]
 }

components/device_signals/core/browser/mac/BUILD.gn

@@ -13,8 +13,6 @@ static_library("mac") {
     "//components/device_signals/core/common/",
   ]
 
-  configs += [ "//build/config/compiler:enable_arc" ]
-
   frameworks = [ "Foundation.framework" ]
 }
 
@@ -29,5 +27,4 @@ source_set("unit_tests") {
     "//testing/gmock",
     "//testing/gtest",
   ]
-  configs += [ "//build/config/compiler:enable_arc" ]
 }

components/device_signals/core/system_signals/mac/BUILD.gn

@@ -19,8 +19,6 @@ static_library("mac") {
     "//net",
   ]
 
-  configs += [ "//build/config/compiler:enable_arc" ]
-
   frameworks = [
     "CoreFoundation.framework",
     "Foundation.framework",
@@ -41,5 +39,4 @@ source_set("unit_tests") {
     "//testing/gmock",
     "//testing/gtest",
   ]
-  configs += [ "//build/config/compiler:enable_arc" ]
 }

components/dom_distiller/ios/BUILD.gn

@@ -3,7 +3,6 @@
 # found in the LICENSE file.
 
 source_set("ios") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "distiller_page_factory_ios.h",
     "distiller_page_factory_ios.mm",

components/download/internal/background_service/ios/BUILD.gn

@@ -26,13 +26,11 @@ source_set("background_service") {
   ]
   frameworks = [ "Foundation.framework" ]
   public_deps = [ "//components/download/public/background_service:public" ]
-  configs += [ "//build/config/compiler:enable_arc" ]
 }
 
 source_set("unit_tests") {
   assert(is_ios)
   testonly = true
-  configs += [ "//build/config/compiler:enable_arc" ]
   deps = [
     ":background_service",
     "//base",

components/favicon/ios/BUILD.gn

@@ -3,7 +3,6 @@
 # found in the LICENSE file.
 
 source_set("ios") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "favicon_url_util.cc",
     "favicon_url_util.h",

components/handoff/BUILD.gn

@@ -15,7 +15,6 @@ source_set("handoff") {
       "//net",
       "//url",
     ]
-    configs += [ "//build/config/compiler:enable_arc" ]
   }
   if (is_ios) {
     sources += [

components/history/core/test/BUILD.gn

@@ -44,7 +44,6 @@ static_library("test") {
 
   if (is_ios) {
     sources += [ "thumbnail_ios.mm" ]
-    configs += [ "//build/config/compiler:enable_arc" ]
   } else {
     sources += [ "thumbnail.cc" ]
   }

components/history/ios/browser/BUILD.gn

@@ -3,7 +3,6 @@
 # found in the LICENSE file.
 
 source_set("browser") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "history_database_helper.cc",
     "history_database_helper.h",

components/image_fetcher/ios/BUILD.gn

@@ -18,7 +18,6 @@ source_set("ios") {
     "//third_party/libwebp:libwebp_webp",
     "//ui/gfx",
   ]
-  configs += [ "//build/config/compiler:enable_arc" ]
 }
 
 source_set("unit_tests") {
@@ -39,7 +38,6 @@ source_set("unit_tests") {
     "//testing/gtest",
     "//ui/gfx",
   ]
-  configs += [ "//build/config/compiler:enable_arc" ]
 }
 
 bundle_data("webp_transcode_unit_tests_bundle_data") {

components/language/ios/browser/BUILD.gn

@@ -5,7 +5,6 @@
 import("//ios/web/public/js_messaging/optimize_ts.gni")
 
 source_set("browser") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "ios_language_detection_tab_helper.h",
     "ios_language_detection_tab_helper.mm",
@@ -44,7 +43,6 @@ optimize_ts("language_detection_js") {
 }
 
 source_set("unit_tests") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   testonly = true
   sources = [
     "ios_language_detection_tab_helper_observer_bridge_unittest.mm",

components/metal_util/BUILD.gn

@@ -36,8 +36,6 @@ component("metal_util") {
     "MetalKit.framework",
   ]
 
-  configs += [ "//build/config/compiler:enable_arc" ]
-
   if (is_mac) {
     sources += [
       "device_removal.h",

components/metrics/BUILD.gn

@@ -234,10 +234,6 @@ if (!is_cronet_build || is_ios) {
       deps += [ ":jni_headers" ]
     }
 
-    if (is_apple) {
-      configs += [ "//build/config/compiler:enable_arc" ]
-    }
-
     if (is_ios) {
       sources += [
         "clean_exit_beacon_ios.mm",

components/nacl/loader/BUILD.gn

@@ -52,7 +52,6 @@ if (current_cpu != "arm64") {
 
     if (is_mac) {
       sources += [ "nacl_main_platform_delegate_mac.mm" ]
-      configs += [ "//build/config/compiler:enable_arc" ]
     }
 
     if (is_linux || is_chromeos) {

components/ntp_tiles/BUILD.gn

@@ -79,7 +79,6 @@ static_library("ntp_tiles") {
       "country_code_ios.h",
       "country_code_ios.mm",
     ]
-    configs += [ "//build/config/compiler:enable_arc" ]
   }
 
   if (enable_extensions) {

components/open_from_clipboard/BUILD.gn

@@ -30,7 +30,6 @@ static_library("open_from_clipboard") {
       "clipboard_recent_content_ios.h",
       "clipboard_recent_content_ios.mm",
     ]
-    configs += [ "//build/config/compiler:enable_arc" ]
   }
 }
 
@@ -55,7 +54,6 @@ source_set("open_from_clipboard_impl") {
       "clipboard_recent_content_impl_ios.h",
       "clipboard_recent_content_impl_ios.mm",
     ]
-    configs += [ "//build/config/compiler:enable_arc" ]
     frameworks = [ "MobileCoreServices.framework" ]
   }
 }
@@ -99,6 +97,5 @@ source_set("unit_tests") {
     ]
   } else {
     sources += [ "clipboard_recent_content_ios_unittest.mm" ]
-    configs += [ "//build/config/compiler:enable_arc" ]
   }
 }

components/os_crypt/sync/BUILD.gn

@@ -47,7 +47,6 @@ component("os_crypt") {
       "keychain_password_mac.mm",
       "os_crypt_mac.mm",
     ]
-    configs += [ "//build/config/compiler:enable_arc" ]
   }
 
   if (is_win) {
@@ -135,7 +134,6 @@ source_set("unit_tests") {
 
   if (is_apple) {
     sources += [ "keychain_password_mac_unittest.mm" ]
-    configs += [ "//build/config/compiler:enable_arc" ]
   }
 
   if (is_linux && !is_castos) {

components/password_manager/ios/BUILD.gn

@@ -6,8 +6,6 @@ import("//build/config/features.gni")
 import("//ios/web/public/js_messaging/optimize_js.gni")
 
 component("ios") {
-  configs += [ "//build/config/compiler:enable_arc" ]
-
   public_deps = [ ":password_manager_feature_header" ]
 
   deps = [
@@ -62,8 +60,6 @@ component("ios") {
 }
 
 source_set("password_manager_feature_header") {
-  configs += [ "//build/config/compiler:enable_arc" ]
-
   deps = [
     "//base",
     "//components/autofill/core/common",
@@ -109,7 +105,6 @@ static_library("test_support") {
 }
 
 source_set("unit_tests") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   testonly = true
   sources = [
     "account_select_fill_data_unittest.cc",
@@ -154,7 +149,6 @@ source_set("unit_tests") {
 }
 
 source_set("fake_bulk_leak_check_service") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   testonly = true
   sources = [
     "fake_bulk_leak_check_service.h",

components/policy/core/common/BUILD.gn

@@ -372,7 +372,6 @@ source_set("internal") {
       "mac_util.h",
     ]
     frameworks = [ "Foundation.framework" ]
-    configs += [ "//build/config/compiler:enable_arc" ]
 
     if (is_mac) {
       sources += [
@@ -503,10 +502,6 @@ source_set("common_constants") {
     "proxy_settings_constants.h",
   ]
 
-  if (is_apple) {
-    configs += [ "//build/config/compiler:enable_arc" ]
-  }
-
   if (is_ios) {
     sources += [
       "policy_loader_ios_constants.h",
@@ -616,7 +611,6 @@ source_set("unit_tests") {
   }
   if (is_apple) {
     sources += [ "mac_util_unittest.cc" ]
-    configs += [ "//build/config/compiler:enable_arc" ]
 
     if (is_mac) {
       sources += [ "policy_loader_mac_unittest.cc" ]

components/power_metrics/BUILD.gn

@@ -29,7 +29,6 @@ static_library("power_metrics") {
       "smc_mac.h",
       "smc_mac.mm",
     ]
-    configs += [ "//build/config/compiler:enable_arc" ]
   }
 
   if (is_win) {
@@ -73,7 +72,6 @@ source_set("unit_tests") {
       "energy_impact_mac_unittest.mm",
       "resource_coalition_mac_unittest.mm",
     ]
-    configs += [ "//build/config/compiler:enable_arc" ]
 
     data = [ "test/data/" ]
   }

components/prefs/ios/BUILD.gn

@@ -3,7 +3,6 @@
 # found in the LICENSE file.
 
 source_set("ios") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "pref_observer_bridge.h",
     "pref_observer_bridge.mm",

components/previous_session_info/BUILD.gn

@@ -4,7 +4,6 @@
 
 source_set("previous_session_info") {
   assert(is_ios)
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "previous_session_info.h",
     "previous_session_info.mm",
@@ -19,7 +18,6 @@ source_set("previous_session_info") {
 }
 
 source_set("unit_tests") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   testonly = true
   sources = [ "previous_session_info_unittest.mm" ]
   deps = [

components/proxy_config/ios/BUILD.gn

@@ -3,8 +3,6 @@
 # found in the LICENSE file.
 
 component("ios") {
-  configs += [ "//build/config/compiler:enable_arc" ]
-
   deps = [
     "//base",
     "//components/proxy_config",

components/reading_list/ios/BUILD.gn

@@ -3,7 +3,6 @@
 # found in the LICENSE file.
 
 source_set("ios") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "favicon_web_state_dispatcher.h",
     "reading_list_model_bridge_observer.h",

components/remote_cocoa/app_shim/BUILD.gn

@@ -79,7 +79,6 @@ component("app_shim") {
     "//ui/gfx/geometry",
     "//ui/strings:ui_strings_grit",
   ]
-  configs += [ "//build/config/compiler:enable_arc" ]
   frameworks = [
     "Cocoa.framework",
     "QuartzCore.framework",

components/remote_cocoa/browser/BUILD.gn

@@ -20,7 +20,6 @@ component("browser") {
     "window.mm",
   ]
   defines = [ "REMOTE_COCOA_BROWSER_IMPLEMENTATION" ]
-  configs += [ "//build/config/compiler:enable_arc" ]
   deps = [
     "//base",
     "//components/remote_cocoa/common:mojo",

components/safe_browsing/ios/browser/BUILD.gn

@@ -8,10 +8,7 @@ source_set("allow_list") {
     "safe_browsing_url_allow_list.mm",
   ]
 
-  configs += [
-    "//build/config/compiler:enable_arc",
-    "//build/config/compiler:wexit_time_destructors",
-  ]
+  configs += [ "//build/config/compiler:wexit_time_destructors" ]
 
   deps = [
     "//components/safe_browsing/core/browser/db:v4_protocol_manager_util",
@@ -44,6 +41,4 @@ source_set("unit_tests") {
     "//testing/gmock",
     "//testing/gtest",
   ]
-
-  configs += [ "//build/config/compiler:enable_arc" ]
 }

components/safe_browsing/ios/browser/password_protection/BUILD.gn

@@ -11,10 +11,7 @@ source_set("password_protection") {
     "request_canceler_ios.mm",
   ]
 
-  configs += [
-    "//build/config/compiler:enable_arc",
-    "//build/config/compiler:wexit_time_destructors",
-  ]
+  configs += [ "//build/config/compiler:wexit_time_destructors" ]
 
   deps = [
     "//base",

components/security_state/ios/BUILD.gn

@@ -5,7 +5,6 @@
 import("//build/config/features.gni")
 
 component("ios") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "security_state_utils.h",
     "security_state_utils.mm",
@@ -22,7 +21,6 @@ component("ios") {
 }
 
 source_set("unit_tests") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   testonly = true
   sources = [ "security_state_utils_unittest.mm" ]
   deps = [

components/send_tab_to_self/ios/BUILD.gn

@@ -3,7 +3,6 @@
 # found in the LICENSE file.
 
 source_set("ios") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "send_tab_to_self_model_bridge_observer.h",
     "send_tab_to_self_model_bridge_observer.mm",

components/services/quarantine/BUILD.gn

@@ -31,7 +31,6 @@ static_library("quarantine") {
 
   if (is_mac) {
     sources += [ "quarantine_mac.mm" ]
-    configs += [ "//build/config/compiler:enable_arc" ]
     frameworks = [
       "Carbon.framework",
       "Foundation.framework",
@@ -70,7 +69,6 @@ source_set("common") {
       "common_mac.h",
       "common_mac.mm",
     ]
-    configs += [ "//build/config/compiler:enable_arc" ]
     frameworks = [
       "Carbon.framework",
       "Foundation.framework",
@@ -99,7 +97,6 @@ source_set("test_support") {
 
   if (is_mac) {
     sources += [ "test_support_mac.mm" ]
-    configs += [ "//build/config/compiler:enable_arc" ]
     frameworks = [
       "Carbon.framework",
       "Foundation.framework",
@@ -142,7 +139,6 @@ source_set("unit_tests") {
 
   if (is_mac) {
     sources += [ "quarantine_mac_unittest.mm" ]
-    configs += [ "//build/config/compiler:enable_arc" ]
     frameworks = [
       "Carbon.framework",
       "Foundation.framework",

components/sessions/BUILD.gn

@@ -48,7 +48,6 @@ if (!is_ios) {
   }
 } else {
   source_set("sessions") {
-    configs += [ "//build/config/compiler:enable_arc" ]
     sources = [
       "ios/ios_live_tab.h",
       "ios/ios_live_tab.mm",
@@ -207,7 +206,6 @@ source_set("unit_tests") {
       "ios/ios_serialized_navigation_builder_unittest.mm",
       "ios/ios_serialized_navigation_driver_unittest.cc",
     ]
-    configs += [ "//build/config/compiler:enable_arc" ]
   }
 
   public_deps = [ ":sessions" ]

components/shared_highlighting/ios/BUILD.gn

@@ -3,7 +3,6 @@
 # found in the LICENSE file.
 
 source_set("ios") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "parsing_utils.h",
     "parsing_utils.mm",
@@ -20,7 +19,6 @@ source_set("ios") {
 }
 
 source_set("unit_tests") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   testonly = true
   sources = [ "parsing_utils_unittest.mm" ]
   deps = [

components/signin/ios/browser/BUILD.gn

@@ -5,7 +5,6 @@
 import("//build/config/features.gni")
 
 source_set("browser") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "account_consistency_service.h",
     "account_consistency_service.mm",
@@ -37,7 +36,6 @@ source_set("browser") {
 }
 
 source_set("features") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "features.cc",
     "features.h",
@@ -49,7 +47,6 @@ source_set("features") {
 }
 
 source_set("active_state_manager") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "active_state_manager.h",
     "active_state_manager_impl.h",
@@ -63,7 +60,6 @@ source_set("active_state_manager") {
 }
 
 source_set("unit_tests") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   testonly = true
   sources = [
     "account_consistency_service_unittest.mm",

components/signin/public/identity_manager/ios/BUILD.gn

@@ -3,8 +3,6 @@
 # found in the LICENSE file.
 
 source_set("ios") {
-  configs += [ "//build/config/compiler:enable_arc" ]
-
   sources = [
     "device_accounts_provider.cc",
     "device_accounts_provider.h",
@@ -17,8 +15,6 @@ source_set("ios") {
 }
 
 source_set("test_support") {
-  configs += [ "//build/config/compiler:enable_arc" ]
-
   testonly = true
 
   sources = [

components/signin/public/identity_manager/objc/BUILD.gn

@@ -3,7 +3,6 @@
 # found in the LICENSE file.
 
 source_set("objc") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "identity_manager_observer_bridge.h",
     "identity_manager_observer_bridge.mm",
@@ -15,8 +14,6 @@ source_set("objc") {
 source_set("unit_tests") {
   testonly = true
 
-  configs += [ "//build/config/compiler:enable_arc" ]
-
   sources = [ "identity_manager_observer_bridge_unittest.mm" ]
 
   deps = [

components/spellcheck/browser/BUILD.gn

@@ -53,7 +53,6 @@ source_set("browser") {
 
   if (is_mac) {
     sources += [ "spellcheck_platform_mac.mm" ]
-    configs += [ "//build/config/compiler:enable_arc" ]
   }
 
   if (is_android) {

components/storage_monitor/BUILD.gn

@@ -52,7 +52,6 @@ static_library("storage_monitor") {
       "Foundation.framework",
       "ImageCaptureCore.framework",
     ]
-    configs += [ "//build/config/compiler:enable_arc" ]
   } else if (is_chromeos_ash) {
     # For Chrome OS, |is_linux| is also true. Put this in an else-if block above
     # the |is_linux| else-if block, so they do not clash.
@@ -166,7 +165,6 @@ source_set("unit_tests") {
       "image_capture_device_manager_unittest.mm",
       "storage_monitor_mac_unittest.mm",
     ]
-    configs += [ "//build/config/compiler:enable_arc" ]
   }
 
   if (is_chromeos_ash) {

components/sync_device_info/BUILD.gn

@@ -65,9 +65,6 @@ static_library("sync_device_info") {
     deps += [ "//chromeos/constants" ]
   }
 
-  if (is_apple) {
-    configs += [ "//build/config/compiler:enable_arc" ]
-  }
   if (is_ios) {
     sources += [ "local_device_info_util_ios.mm" ]
   }

components/system_media_controls/BUILD.gn

@@ -52,7 +52,6 @@ component("system_media_controls") {
       "mac/system_media_controls_mac.mm",
     ]
     deps += [ "//build:branding_buildflags" ]
-    configs += [ "//build/config/compiler:enable_arc" ]
 
     frameworks = [ "Foundation.framework" ]
     weak_frameworks = [ "MediaPlayer.framework" ]

components/translate/ios/browser/BUILD.gn

@@ -6,7 +6,6 @@ import("//build/config/features.gni")
 import("//ios/web/public/js_messaging/optimize_ts.gni")
 
 source_set("browser") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "ios_translate_driver.h",
     "ios_translate_driver.mm",
@@ -55,7 +54,6 @@ optimize_ts("injected_js") {
 }
 
 source_set("unit_tests") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   testonly = true
   sources = [
     "ios_translate_driver_unittest.mm",

components/ui_devtools/views/BUILD.gn

@@ -53,7 +53,6 @@ source_set("views") {
       "overlay_agent_mac.h",
       "overlay_agent_mac.mm",
     ]
-    configs += [ "//build/config/compiler:enable_arc" ]
   }
 }
 

components/ukm/ios/BUILD.gn

@@ -11,7 +11,6 @@ group("ios") {
 }
 
 source_set("ukm_url_recorder") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   sources = [
     "ukm_url_recorder.h",
     "ukm_url_recorder.mm",
@@ -25,7 +24,6 @@ source_set("ukm_url_recorder") {
 }
 
 source_set("ukm_reporting_ios_util") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   deps = [ "//base" ]
 
   sources = [
@@ -35,7 +33,6 @@ source_set("ukm_reporting_ios_util") {
 }
 
 source_set("unit_tests") {
-  configs += [ "//build/config/compiler:enable_arc" ]
   testonly = true
   sources = [ "ukm_url_recorder_unittest.mm" ]
   deps = [

components/user_education/views/BUILD.gn

@@ -23,7 +23,6 @@ source_set("views") {
       "help_bubble_factory_mac.h",
       "help_bubble_factory_mac.mm",
     ]
-    configs += [ "//build/config/compiler:enable_arc" ]
   }
 
   public_deps = [ "//components/user_education/common" ]

components/viz/common/BUILD.gn

@@ -79,8 +79,6 @@ if (skia_use_metal) {
       "//ui/gl",
     ]
 
-    viz_add_configs += [ "//build/config/compiler:enable_arc" ]
-
     frameworks = [
       "Metal.framework",
       "Foundation.framework",

components/viz/service/BUILD.gn

@@ -314,7 +314,6 @@ viz_component("service") {
     ]
 
     deps += [ "//ui/accelerated_widget_mac" ]
-    viz_add_configs += [ "//build/config/compiler:enable_arc" ]
     frameworks = [ "IOSurface.framework" ]
     if (is_ios) {
       sources += [
@@ -586,7 +585,6 @@ viz_source_set("unit_tests") {
       "display/overlay_ca_unittest.cc",
       "display_embedder/software_output_device_mac_unittest.mm",
     ]
-    configs += [ "//build/config/compiler:enable_arc" ]
     frameworks = [ "IOSurface.framework" ]
   }
 

components/wifi/BUILD.gn

@@ -35,7 +35,6 @@ component("wifi") {
       "Foundation.framework",
       "SystemConfiguration.framework",
     ]
-    configs += [ "//build/config/compiler:enable_arc" ]
   }
 
   if (is_fuchsia) {