[SysUi download integration] Add "copy to clipboard" button

This CL adds a notification button to copy the download image to
clipboard if the image download has completed.

A demo has been attached to the issue.

Bug: b/326122967
Change-Id: I4d035757bdea75a00941cab1c16a9d5ca2eb435e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5310539
Commit-Queue: Andrew Xu <andrewxu@chromium.org>
Reviewed-by: David Black <dmblack@google.com>
Cr-Commit-Position: refs/heads/main@{#1265967}

ash/ash_strings.grd

@@ -7680,6 +7680,9 @@ To shut down the device, press and hold the power button on the device again.
       <message name="IDS_ASH_DOWNLOAD_COMMAND_TEXT_CANCEL" desc="Text of the command to cancel a download.">
         Cancel
       </message>
+      <message name="IDS_ASH_DOWNLOAD_COMMAND_TEXT_COPY_TO_CLIPBOARD" desc="Text of the command to copy the download file to clipboard.">
+        Copy to clipboard
+      </message>
       <message name="IDS_ASH_DOWNLOAD_COMMAND_TEXT_PAUSE" desc="Text of the command to pause a download.">
         Pause
       </message>

ash/ash_strings_grd/IDS_ASH_DOWNLOAD_COMMAND_TEXT_COPY_TO_CLIPBOARD.png.sha1

@@ -0,0 +1 @@
+78af3668f6d2945de8f98d57b602be639ddb81e8

chrome/browser/ui/ash/download_status/display_manager.cc

@@ -25,6 +25,12 @@
 #include "chrome/browser/ui/ash/download_status/notification_display_client.h"
 #include "chromeos/crosapi/mojom/download_controller.mojom.h"
 #include "chromeos/crosapi/mojom/download_status_updater.mojom.h"
+#include "net/base/mime_util.h"
+#include "third_party/blink/public/common/mime_util/mime_util.h"
+#include "ui/base/clipboard/clipboard_buffer.h"
+#include "ui/base/clipboard/file_info.h"
+#include "ui/base/clipboard/scoped_clipboard_writer.h"
+#include "ui/gfx/image/image_skia.h"
 
 namespace ash::download_status {
 
@@ -134,6 +140,15 @@ std::optional<std::u16string> GetText(
   return file_path.get().BaseName().LossyDisplayName();
 }
 
+// Returns true if the file referred to by `file_path` is of an image MIME type.
+bool HasSupportedImageMimeType(const base::FilePath& file_path) {
+  std::string mime_type;
+  if (net::GetMimeTypeFromFile(file_path, &mime_type)) {
+    return blink::IsSupportedImageMimeType(mime_type);
+  }
+  return false;
+}
+
 // Opens the download file specified by `file_path` under the file system
 // associated with `profile`.
 void OpenFile(Profile* profile, const base::FilePath& file_path) {
@@ -240,22 +255,38 @@ DisplayMetadata DisplayManager::CalculateDisplayMetadata(
         &kResumeIcon, IDS_ASH_DOWNLOAD_COMMAND_TEXT_RESUME,
         CommandType::kResume);
   }
+  const base::FilePath& full_path = *download_status.full_path;
   switch (download_status.state) {
     case crosapi::mojom::DownloadState::kComplete:
       // NOTE: `kOpenFile` is not shown so it doesn't require an icon/text_id.
       command_infos.emplace_back(
-          base::BindRepeating(
-              &DisplayManager::PerformCommand, weak_ptr_factory_.GetWeakPtr(),
-              CommandType::kOpenFile, *download_status.full_path),
+          base::BindRepeating(&DisplayManager::PerformCommand,
+                              weak_ptr_factory_.GetWeakPtr(),
+                              CommandType::kOpenFile, full_path),
           /*icon=*/nullptr, /*text_id=*/-1, CommandType::kOpenFile);
 
       // NOTE: The `kShowInFolder` button does not have an icon.
       command_infos.emplace_back(
-          base::BindRepeating(
-              &DisplayManager::PerformCommand, weak_ptr_factory_.GetWeakPtr(),
-              CommandType::kShowInFolder, *download_status.full_path),
+          base::BindRepeating(&DisplayManager::PerformCommand,
+                              weak_ptr_factory_.GetWeakPtr(),
+                              CommandType::kShowInFolder, full_path),
           /*icon=*/nullptr, IDS_ASH_DOWNLOAD_COMMAND_TEXT_SHOW_IN_FOLDER,
           CommandType::kShowInFolder);
+
+      // Add a command to copy the download file to clipboard if:
+      // 1. `download_status` has a valid image; AND
+      // 2. The download file is an image.
+      // NOTE: The `kCopyToClipboard` button does not require an icon.
+      if (const gfx::ImageSkia& image = download_status.image;
+          !image.isNull() && !image.size().IsEmpty() &&
+          HasSupportedImageMimeType(full_path)) {
+        command_infos.emplace_back(
+            base::BindRepeating(&DisplayManager::PerformCommand,
+                                weak_ptr_factory_.GetWeakPtr(),
+                                CommandType::kCopyToClipboard, full_path),
+            /*icon=*/nullptr, IDS_ASH_DOWNLOAD_COMMAND_TEXT_COPY_TO_CLIPBOARD,
+            CommandType::kCopyToClipboard);
+      }
       break;
     case crosapi::mojom::DownloadState::kInProgress:
       // NOTE: `kShowInBrowser` is not shown so doesn't require an icon/text_id.
@@ -284,7 +315,7 @@ DisplayMetadata DisplayManager::CalculateDisplayMetadata(
   }
   display_metadata.command_infos = std::move(command_infos);
 
-  display_metadata.file_path = *download_status.full_path;
+  display_metadata.file_path = full_path;
   display_metadata.image = download_status.image;
   display_metadata.progress = GetProgress(download_status);
   display_metadata.secondary_text = download_status.status_text;
@@ -301,6 +332,13 @@ void DisplayManager::PerformCommand(
       download_status_updater_->Cancel(/*guid=*/std::get<std::string>(param),
                                        /*callback=*/base::DoNothing());
       break;
+    case CommandType::kCopyToClipboard: {
+      ui::ScopedClipboardWriter scw(ui::ClipboardBuffer::kCopyPaste);
+      scw.WriteFilenames(ui::FileInfosToURIList(
+          /*filenames=*/{ui::FileInfo(std::get<base::FilePath>(param),
+                                      /*display_name=*/base::FilePath())}));
+      break;
+    }
     case CommandType::kOpenFile:
       OpenFile(profile_, std::get<base::FilePath>(param));
       break;

chrome/browser/ui/ash/download_status/display_metadata.h

@@ -22,6 +22,7 @@ namespace ash::download_status {
 // Lists the types of commands that can be performed on a displayed download.
 enum class CommandType {
   kCancel,
+  kCopyToClipboard,
   kOpenFile,
   kPause,
   kResume,

chrome/browser/ui/ash/download_status/display_test_util.cc

@@ -22,11 +22,12 @@ constexpr int64_t kUnknownTotalBytes = -1;
 
 crosapi::mojom::DownloadStatusPtr CreateDownloadStatus(
     Profile* profile,
+    std::string_view extension,
     crosapi::mojom::DownloadState state,
     crosapi::mojom::DownloadProgressPtr progress) {
   crosapi::mojom::DownloadStatusPtr download_status =
       crosapi::mojom::DownloadStatus::New();
-  download_status->full_path = test::CreateFile(profile);
+  download_status->full_path = test::CreateFile(profile, extension);
   download_status->guid = base::UnguessableToken::Create().ToString();
   download_status->progress = std::move(progress);
   download_status->state = state;
@@ -36,10 +37,11 @@ crosapi::mojom::DownloadStatusPtr CreateDownloadStatus(
 
 crosapi::mojom::DownloadStatusPtr CreateInProgressDownloadStatus(
     Profile* profile,
+    std::string_view extension,
     int64_t received_bytes,
     const std::optional<int64_t>& total_bytes) {
   return CreateDownloadStatus(
-      profile, crosapi::mojom::DownloadState::kInProgress,
+      profile, extension, crosapi::mojom::DownloadState::kInProgress,
       crosapi::mojom::DownloadProgress::New(
           /*loop=*/false, received_bytes,
           total_bytes.value_or(kUnknownTotalBytes), /*visible=*/true));

chrome/browser/ui/ash/download_status/display_test_util.h

@@ -6,6 +6,7 @@
 #define CHROME_BROWSER_UI_ASH_DOWNLOAD_STATUS_DISPLAY_TEST_UTIL_H_
 
 #include <optional>
+#include <string_view>
 
 #include "chromeos/crosapi/mojom/download_status_updater.mojom.h"
 
@@ -13,10 +14,11 @@ class Profile;
 
 namespace ash::download_status {
 
-// Creates a download status associated with a file under the downloads
-// directory of `profile`.
+// Creates a download status associated with a file with the specified
+// `extension` under the downloads directory of `profile`.
 crosapi::mojom::DownloadStatusPtr CreateDownloadStatus(
     Profile* profile,
+    std::string_view extension,
     crosapi::mojom::DownloadState state,
     crosapi::mojom::DownloadProgressPtr progress);
 
@@ -24,6 +26,7 @@ crosapi::mojom::DownloadStatusPtr CreateDownloadStatus(
 // with a file under the downloads directory of `profile`.
 crosapi::mojom::DownloadStatusPtr CreateInProgressDownloadStatus(
     Profile* profile,
+    std::string_view extension,
     int64_t received_bytes,
     const std::optional<int64_t>& total_bytes = std::nullopt);
 

chrome/browser/ui/ash/download_status/holding_space_display_client.cc

@@ -4,6 +4,7 @@
 
 #include "chrome/browser/ui/ash/download_status/holding_space_display_client.h"
 
+#include <optional>
 #include <utility>
 #include <vector>
 
@@ -28,14 +29,17 @@ namespace ash::download_status {
 
 namespace {
 
-// Returns the command ID corresponding to the given command type.
+// Returns the command ID corresponding to the given command type if any. If
+// there is no such command ID, returns `std::nullopt`.
 // NOTE: It is fine to map both `CommandType::kOpenFile` and
 // `CommandType::kShowInBrowser` to `kOpenItem`, because `kOpenItem` is not
 // accessible from a holding space chip's context menu.
-HoldingSpaceCommandId ConvertCommandTypeToId(CommandType type) {
+std::optional<HoldingSpaceCommandId> ConvertCommandTypeToId(CommandType type) {
   switch (type) {
     case CommandType::kCancel:
       return HoldingSpaceCommandId::kCancelItem;
+    case CommandType::kCopyToClipboard:
+      return std::nullopt;
     case CommandType::kOpenFile:
       return HoldingSpaceCommandId::kOpenItem;
     case CommandType::kPause:
@@ -51,12 +55,16 @@ HoldingSpaceCommandId ConvertCommandTypeToId(CommandType type) {
   }
 }
 
-// Returns the holding space item action corresponding to `type`.
-holding_space_metrics::ItemAction ConvertCommandTypeToAction(CommandType type) {
+// Returns the holding space item action corresponding to `type` if any. If
+// there is no such action, returns `std::nullopt`.
+std::optional<holding_space_metrics::ItemAction> ConvertCommandTypeToAction(
+    CommandType type) {
   using ItemAction = holding_space_metrics::ItemAction;
   switch (type) {
     case CommandType::kCancel:
       return ItemAction::kCancel;
+    case CommandType::kCopyToClipboard:
+      return std::nullopt;
     case CommandType::kOpenFile:
       return ItemAction::kLaunch;
     case CommandType::kPause:
@@ -121,23 +129,31 @@ void HoldingSpaceDisplayClient::AddOrUpdate(
   // Generate in-progress commands from `display_metadata`.
   std::vector<HoldingSpaceItem::InProgressCommand> in_progress_commands;
   for (const auto& command_info : display_metadata.command_infos) {
-    if (const HoldingSpaceCommandId id =
-            ConvertCommandTypeToId(command_info.type);
-        holding_space_util::IsInProgressCommand(id)) {
-      in_progress_commands.emplace_back(
-          id, command_info.text_id, command_info.icon,
-          base::BindRepeating(
-              [](holding_space_metrics::ItemAction action,
-                 const base::RepeatingClosure& command_callback,
-                 const HoldingSpaceItem* item, HoldingSpaceCommandId command_id,
-                 holding_space_metrics::EventSource event_source) {
-                command_callback.Run();
-                holding_space_metrics::RecordItemAction(
-                    /*items=*/{item}, action, event_source);
-              },
-              ConvertCommandTypeToAction(command_info.type),
-              command_info.command_callback));
+    const std::optional<HoldingSpaceCommandId> id =
+        ConvertCommandTypeToId(command_info.type);
+    const std::optional<holding_space_metrics::ItemAction> item_action =
+        ConvertCommandTypeToAction(command_info.type);
+
+    // Skip `command_info` if:
+    // 1. It does not have a corresponding ID; OR
+    // 2. Its corresponding ID is not for an in-progress command; OR
+    // 3. It does not have a corresponding item action.
+    if (!id || !holding_space_util::IsInProgressCommand(*id) || !item_action) {
+      continue;
     }
+
+    in_progress_commands.emplace_back(
+        *id, command_info.text_id, command_info.icon,
+        base::BindRepeating(
+            [](holding_space_metrics::ItemAction action,
+               const base::RepeatingClosure& command_callback,
+               const HoldingSpaceItem* item, HoldingSpaceCommandId command_id,
+               holding_space_metrics::EventSource event_source) {
+              command_callback.Run();
+              holding_space_metrics::RecordItemAction(
+                  /*items=*/{item}, action, event_source);
+            },
+            *item_action, command_info.command_callback));
   }
 
   // Specify the backing file.

chrome/browser/ui/ash/download_status/holding_space_display_client_browsertest.cc

@@ -137,17 +137,18 @@ IN_PROC_BROWSER_TEST_F(HoldingSpaceDisplayClientBrowserTest,
   Profile* const profile = ProfileManager::GetActiveUserProfile();
   crosapi::mojom::DownloadStatusPtr in_progress_download =
       CreateInProgressDownloadStatus(profile,
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0,
                                      /*total_bytes=*/1024);
   in_progress_download->cancellable = true;
   Update(in_progress_download->Clone());
-  crosapi::mojom::DownloadStatusPtr completed_download =
-      CreateDownloadStatus(profile, crosapi::mojom::DownloadState::kComplete,
-                           crosapi::mojom::DownloadProgress::New(
-                               /*loop=*/false,
-                               /*received_bytes=*/1024,
-                               /*total_bytes=*/1024,
-                               /*visible=*/false));
+  crosapi::mojom::DownloadStatusPtr completed_download = CreateDownloadStatus(
+      profile, /*extension=*/"txt", crosapi::mojom::DownloadState::kComplete,
+      crosapi::mojom::DownloadProgress::New(
+          /*loop=*/false,
+          /*received_bytes=*/1024,
+          /*total_bytes=*/1024,
+          /*visible=*/false));
   Update(completed_download->Clone());
   test_api().Show();
 
@@ -258,12 +259,13 @@ IN_PROC_BROWSER_TEST_F(HoldingSpaceDisplayClientBrowserTest,
   Profile* const profile = ProfileManager::GetActiveUserProfile();
   crosapi::mojom::DownloadStatusPtr in_progress_download =
       CreateInProgressDownloadStatus(profile,
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0,
                                      /*total_bytes=*/1024);
   in_progress_download->cancellable = true;
   Update(in_progress_download->Clone());
   crosapi::mojom::DownloadStatusPtr completed_download = CreateDownloadStatus(
-      profile, crosapi::mojom::DownloadState::kComplete,
+      profile, /*extension=*/"txt", crosapi::mojom::DownloadState::kComplete,
       crosapi::mojom::DownloadProgress::New(
           /*loop=*/false,
           /*received_bytes=*/1024, /*total_bytes=*/1024, /*visible=*/false));
@@ -367,14 +369,14 @@ IN_PROC_BROWSER_TEST_F(HoldingSpaceDisplayClientBrowserTest,
 IN_PROC_BROWSER_TEST_F(HoldingSpaceDisplayClientBrowserTest,
                        ClickCompletedDownloadChip) {
   // Add a completed download.
-  crosapi::mojom::DownloadStatusPtr download =
-      CreateDownloadStatus(ProfileManager::GetActiveUserProfile(),
-                           crosapi::mojom::DownloadState::kComplete,
-                           crosapi::mojom::DownloadProgress::New(
-                               /*loop=*/false,
-                               /*received_bytes=*/1024,
-                               /*total_bytes=*/1024,
-                               /*visible=*/false));
+  crosapi::mojom::DownloadStatusPtr download = CreateDownloadStatus(
+      ProfileManager::GetActiveUserProfile(),
+      /*extension=*/"txt", crosapi::mojom::DownloadState::kComplete,
+      crosapi::mojom::DownloadProgress::New(
+          /*loop=*/false,
+          /*received_bytes=*/1024,
+          /*total_bytes=*/1024,
+          /*visible=*/false));
   Update(download->Clone());
   test_api().Show();
 
@@ -416,6 +418,7 @@ IN_PROC_BROWSER_TEST_F(HoldingSpaceDisplayClientBrowserTest,
   // Add an in-progress download.
   crosapi::mojom::DownloadStatusPtr download =
       CreateInProgressDownloadStatus(ProfileManager::GetActiveUserProfile(),
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0,
                                      /*total_bytes=*/1024);
   Update(download->Clone());
@@ -456,6 +459,7 @@ IN_PROC_BROWSER_TEST_F(HoldingSpaceDisplayClientBrowserTest, CompleteDownload) {
   Profile* const active_profile = ProfileManager::GetActiveUserProfile();
   crosapi::mojom::DownloadStatusPtr download =
       CreateInProgressDownloadStatus(active_profile,
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0,
                                      /*total_bytes=*/1024);
   Update(download->Clone());
@@ -535,6 +539,7 @@ IN_PROC_BROWSER_TEST_F(HoldingSpaceDisplayClientBrowserTest, CompleteDownload) {
   // Add a new in-progress download with the duplicate download guid.
   crosapi::mojom::DownloadStatusPtr duplicate_download =
       CreateInProgressDownloadStatus(active_profile,
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0,
                                      /*total_bytes=*/1024);
   duplicate_download->guid = download->guid;
@@ -548,8 +553,9 @@ IN_PROC_BROWSER_TEST_F(HoldingSpaceDisplayClientBrowserTest, CompleteDownload) {
 IN_PROC_BROWSER_TEST_F(HoldingSpaceDisplayClientBrowserTest,
                        IndeterminateDownload) {
   // Create a download with an unknown total bytes count.
-  crosapi::mojom::DownloadStatusPtr download = CreateInProgressDownloadStatus(
-      ProfileManager::GetActiveUserProfile(), /*received_bytes=*/0);
+  crosapi::mojom::DownloadStatusPtr download =
+      CreateInProgressDownloadStatus(ProfileManager::GetActiveUserProfile(),
+                                     /*extension=*/"txt", /*received_bytes=*/0);
   Update(download->Clone());
   test_api().Show();
 
@@ -568,6 +574,7 @@ IN_PROC_BROWSER_TEST_F(HoldingSpaceDisplayClientBrowserTest,
   // could happen when a download is blocked.
   crosapi::mojom::DownloadStatusPtr download =
       CreateInProgressDownloadStatus(ProfileManager::GetActiveUserProfile(),
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0,
                                      /*total_bytes=*/1024);
   download->progress->visible = false;
@@ -592,6 +599,7 @@ IN_PROC_BROWSER_TEST_F(HoldingSpaceDisplayClientBrowserTest,
                        InterruptDownload) {
   crosapi::mojom::DownloadStatusPtr download =
       CreateInProgressDownloadStatus(ProfileManager::GetActiveUserProfile(),
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0,
                                      /*total_bytes=*/1024);
   Update(download->Clone());
@@ -610,6 +618,7 @@ IN_PROC_BROWSER_TEST_F(HoldingSpaceDisplayClientBrowserTest,
                        PauseAndResumeDownloadViaContextMenu) {
   crosapi::mojom::DownloadStatusPtr download =
       CreateInProgressDownloadStatus(ProfileManager::GetActiveUserProfile(),
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0,
                                      /*total_bytes=*/1024);
   download->pausable = true;
@@ -689,6 +698,7 @@ IN_PROC_BROWSER_TEST_F(HoldingSpaceDisplayClientBrowserTest,
                        PauseAndResumeDownloadViaSecondaryAction) {
   crosapi::mojom::DownloadStatusPtr download =
       CreateInProgressDownloadStatus(ProfileManager::GetActiveUserProfile(),
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0,
                                      /*total_bytes=*/1024);
   download->pausable = true;
@@ -773,6 +783,7 @@ IN_PROC_BROWSER_TEST_F(HoldingSpaceDisplayClientBrowserTest,
 IN_PROC_BROWSER_TEST_F(HoldingSpaceDisplayClientBrowserTest, SecondaryLabel) {
   crosapi::mojom::DownloadStatusPtr download =
       CreateInProgressDownloadStatus(ProfileManager::GetActiveUserProfile(),
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0,
                                      /*total_bytes=*/1024);
   Update(download->Clone());
@@ -806,6 +817,7 @@ IN_PROC_BROWSER_TEST_F(HoldingSpaceDisplayClientBrowserTest,
                        ServiceSuspendedDuringDownload) {
   crosapi::mojom::DownloadStatusPtr download =
       CreateInProgressDownloadStatus(ProfileManager::GetActiveUserProfile(),
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0,
                                      /*total_bytes=*/1024);
   Update(download->Clone());
@@ -849,6 +861,7 @@ IN_PROC_BROWSER_TEST_F(HoldingSpaceDisplayClientBrowserTest,
   // Create an in-progress download that can be canceled and paused.
   crosapi::mojom::DownloadStatusPtr download =
       CreateInProgressDownloadStatus(ProfileManager::GetActiveUserProfile(),
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0,
                                      /*total_bytes=*/1024);
   download->cancellable = true;

chrome/browser/ui/ash/download_status/notification_display_client.cc

@@ -144,6 +144,8 @@ const char* GetMetricString(CommandType command) {
   switch (command) {
     case CommandType::kCancel:
       return "DownloadNotificationV2.Button_Cancel";
+    case CommandType::kCopyToClipboard:
+      return "DownloadNotificationV2.Button_CopyToClipboard";
     case CommandType::kOpenFile:
       return "DownloadNotificationV2.Click_Completed";
     case CommandType::kPause:
@@ -167,6 +169,7 @@ bool IsBodyClickCommandType(CommandType command) {
     case CommandType::kShowInBrowser:
       return true;
     case CommandType::kCancel:
+    case CommandType::kCopyToClipboard:
     case CommandType::kPause:
     case CommandType::kResume:
     case CommandType::kShowInFolder:
@@ -180,6 +183,7 @@ bool IsBodyClickCommandType(CommandType command) {
 bool IsButtonClickCommandType(CommandType command) {
   switch (command) {
     case CommandType::kCancel:
+    case CommandType::kCopyToClipboard:
     case CommandType::kPause:
     case CommandType::kResume:
     case CommandType::kShowInFolder:

chrome/browser/ui/ash/download_status/notification_display_client_browsertest.cc

@@ -53,6 +53,8 @@
 #include "ui/aura/env_observer.h"
 #include "ui/aura/test/find_window.h"
 #include "ui/aura/window.h"
+#include "ui/base/clipboard/clipboard.h"
+#include "ui/base/clipboard/clipboard_buffer.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/image/image_unittest_util.h"
 #include "ui/message_center/public/cpp/notification.h"
@@ -75,7 +77,9 @@ using ::testing::_;
 using ::testing::AllOf;
 using ::testing::Contains;
 using ::testing::Each;
+using ::testing::ElementsAre;
 using ::testing::Eq;
+using ::testing::Field;
 using ::testing::Mock;
 using ::testing::NiceMock;
 using ::testing::Not;
@@ -123,6 +127,8 @@ int GetCommandTextId(CommandType command_type) {
   switch (command_type) {
     case CommandType::kCancel:
       return IDS_ASH_DOWNLOAD_COMMAND_TEXT_CANCEL;
+    case CommandType::kCopyToClipboard:
+      return IDS_ASH_DOWNLOAD_COMMAND_TEXT_COPY_TO_CLIPBOARD;
     case CommandType::kOpenFile:
       NOTREACHED_NORETURN();
     case CommandType::kPause:
@@ -251,6 +257,7 @@ IN_PROC_BROWSER_TEST_F(NotificationDisplayClientBrowserTest, CancelDownload) {
           }));
   crosapi::mojom::DownloadStatusPtr uncancellable_download =
       CreateInProgressDownloadStatus(profile,
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0,
                                      /*total_bytes=*/1024);
   uncancellable_download->cancellable = false;
@@ -278,6 +285,7 @@ IN_PROC_BROWSER_TEST_F(NotificationDisplayClientBrowserTest, CancelDownload) {
           }));
   crosapi::mojom::DownloadStatusPtr cancellable_download =
       CreateInProgressDownloadStatus(profile,
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0,
                                      /*total_bytes=*/1024);
   cancellable_download->cancellable = true;
@@ -335,13 +343,13 @@ IN_PROC_BROWSER_TEST_F(NotificationDisplayClientBrowserTest,
           [&notification_id](const message_center::Notification& notification) {
             notification_id = notification.id();
           }));
-  crosapi::mojom::DownloadStatusPtr download =
-      CreateDownloadStatus(profile, crosapi::mojom::DownloadState::kComplete,
-                           crosapi::mojom::DownloadProgress::New(
-                               /*loop=*/false,
-                               /*received_bytes=*/1024,
-                               /*total_bytes=*/1024,
-                               /*visible=*/false));
+  crosapi::mojom::DownloadStatusPtr download = CreateDownloadStatus(
+      profile, /*extension=*/"txt", crosapi::mojom::DownloadState::kComplete,
+      crosapi::mojom::DownloadProgress::New(
+          /*loop=*/false,
+          /*received_bytes=*/1024,
+          /*total_bytes=*/1024,
+          /*visible=*/false));
   Update(download->Clone());
   Mock::VerifyAndClearExpectations(&service_observer());
 
@@ -384,6 +392,7 @@ IN_PROC_BROWSER_TEST_F(NotificationDisplayClientBrowserTest,
           }));
   crosapi::mojom::DownloadStatusPtr download =
       CreateInProgressDownloadStatus(profile,
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0,
                                      /*total_bytes=*/1024);
   Update(download->Clone());
@@ -418,9 +427,10 @@ IN_PROC_BROWSER_TEST_F(NotificationDisplayClientBrowserTest,
 // still show.
 IN_PROC_BROWSER_TEST_F(NotificationDisplayClientBrowserTest, CompleteDownload) {
   Profile* const profile = ProfileManager::GetActiveUserProfile();
-  crosapi::mojom::DownloadStatusPtr download =
-      CreateDownloadStatus(profile, crosapi::mojom::DownloadState::kInProgress,
-                           /*progress=*/nullptr);
+  crosapi::mojom::DownloadStatusPtr download = CreateDownloadStatus(
+      profile,
+      /*extension=*/"txt", crosapi::mojom::DownloadState::kInProgress,
+      /*progress=*/nullptr);
   EXPECT_FALSE(download->target_file_path);
   std::string notification_id;
 
@@ -544,6 +554,7 @@ IN_PROC_BROWSER_TEST_F(NotificationDisplayClientBrowserTest,
   Profile* const profile = ProfileManager::GetActiveUserProfile();
   crosapi::mojom::DownloadStatusPtr download =
       CreateInProgressDownloadStatus(profile,
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0,
                                      /*total_bytes=*/1024);
   Update(download->Clone());
@@ -580,12 +591,14 @@ IN_PROC_BROWSER_TEST_F(NotificationDisplayClientBrowserTest, ImageDownload) {
             notification_id = notification.id();
           }));
 
-  // Create a download.
+  // Create an image download.
   Profile* const profile = ProfileManager::GetActiveUserProfile();
-  crosapi::mojom::DownloadStatusPtr download =
-      CreateInProgressDownloadStatus(profile,
-                                     /*received_bytes=*/0,
-                                     /*total_bytes=*/1024);
+  crosapi::mojom::DownloadStatusPtr download = CreateDownloadStatus(
+      profile,
+      /*extension=*/"png", crosapi::mojom::DownloadState::kInProgress,
+      crosapi::mojom::DownloadProgress::New(
+          /*loop=*/false, /*received_bytes=*/0,
+          /*total_bytes=*/1024, /*visible=*/true));
   Update(download->Clone());
   Mock::VerifyAndClearExpectations(&service_observer());
 
@@ -614,6 +627,49 @@ IN_PROC_BROWSER_TEST_F(NotificationDisplayClientBrowserTest, ImageDownload) {
       *large_image_view->original_image().bitmap(),
       gfx::test::CreateBitmap(/*width=*/360,
                               /*height=*/240, image_color)));
+
+  // An in-progress image download's notification should not have a 'Copy to
+  // clipboard' button.
+  const std::u16string copy_to_clipboard_button_text =
+      l10n_util::GetStringUTF16(
+          GetCommandTextId(CommandType::kCopyToClipboard));
+  EXPECT_THAT(
+      popup_view->GetActionButtonsForTest(),
+      Not(Contains(Pointee(Property(&views::LabelButton::GetText,
+                                    Eq(copy_to_clipboard_button_text))))));
+
+  // Complete `download`. Then check action buttons.
+  MarkDownloadStatusCompleted(*download);
+  Update(download->Clone());
+  const std::vector<raw_ptr<views::LabelButton, VectorExperimental>>
+      action_buttons = popup_view->GetActionButtonsForTest();
+  EXPECT_THAT(
+      action_buttons,
+      ElementsAre(
+          Pointee(Property(&views::LabelButton::GetText,
+                           Eq(l10n_util::GetStringUTF16(
+                               GetCommandTextId(CommandType::kShowInFolder))))),
+          Pointee(Property(&views::LabelButton::GetText,
+                           Eq(copy_to_clipboard_button_text)))));
+
+  // Click the 'Copy to clipboard' button. Then verify the click is recorded.
+  base::UserActionTester tester;
+  auto copy_to_clipboard_button_iter =
+      base::ranges::find(action_buttons, copy_to_clipboard_button_text,
+                         &views::LabelButton::GetText);
+  ASSERT_NE(copy_to_clipboard_button_iter, action_buttons.cend());
+  test::Click(*copy_to_clipboard_button_iter, ui::EF_NONE);
+  EXPECT_EQ(
+      tester.GetActionCount("DownloadNotificationV2.Button_CopyToClipboard"),
+      1);
+
+  // Verify the filename in the clipboard as expected.
+  base::test::TestFuture<std::vector<ui::FileInfo>> test_future;
+  ui::Clipboard::GetForCurrentThread()->ReadFilenames(
+      ui::ClipboardBuffer::kCopyPaste,
+      /*data_dst=*/nullptr, test_future.GetCallback());
+  EXPECT_THAT(test_future.Get(),
+              ElementsAre(Field(&ui::FileInfo::path, *download->full_path)));
 }
 
 // Verifies that the notification of a download with an unknown total bytes
@@ -630,6 +686,7 @@ IN_PROC_BROWSER_TEST_F(NotificationDisplayClientBrowserTest,
   Profile* const profile = ProfileManager::GetActiveUserProfile();
   crosapi::mojom::DownloadStatusPtr download =
       CreateInProgressDownloadStatus(profile,
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0);
 
   Update(download->Clone());
@@ -668,6 +725,7 @@ IN_PROC_BROWSER_TEST_F(NotificationDisplayClientBrowserTest,
           }));
   crosapi::mojom::DownloadStatusPtr download =
       CreateInProgressDownloadStatus(ProfileManager::GetActiveUserProfile(),
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0,
                                      /*total_bytes=*/1024);
   Update(download->Clone());
@@ -691,6 +749,7 @@ IN_PROC_BROWSER_TEST_F(NotificationDisplayClientBrowserTest,
           }));
   crosapi::mojom::DownloadStatusPtr download =
       CreateInProgressDownloadStatus(profile,
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0,
                                      /*total_bytes=*/1024);
   download->pausable = true;
@@ -803,6 +862,7 @@ IN_PROC_BROWSER_TEST_F(NotificationDisplayClientBrowserTest, ShowInFolder) {
           }));
   crosapi::mojom::DownloadStatusPtr download =
       CreateInProgressDownloadStatus(profile,
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0,
                                      /*total_bytes=*/1024);
   Update(download->Clone());
@@ -860,6 +920,7 @@ IN_PROC_BROWSER_TEST_F(NotificationDisplayClientBrowserTest,
   Profile* const profile = ProfileManager::GetActiveUserProfile();
   crosapi::mojom::DownloadStatusPtr download =
       CreateInProgressDownloadStatus(profile,
+                                     /*extension=*/"txt",
                                      /*received_bytes=*/0,
                                      /*total_bytes=*/1024);
   download->cancellable = true;

tools/metrics/actions/actions.xml

@@ -9512,6 +9512,15 @@ should be able to be added at any place in this file.
   </description>
 </action>
 
+<action name="DownloadNotificationV2.Button_CopyToClipboard">
+  <owner>andrewxu@chromium.org</owner>
+  <owner>cros-system-ui-productivity-eng@google.com</owner>
+  <description>
+    User clicks &quot;Copy to clipboard&quot; button on a download notification
+    with the downloads integration V2 feature enabled.
+  </description>
+</action>
+
 <action name="DownloadNotificationV2.Button_Pause">
   <owner>andrewxu@chromium.org</owner>
   <owner>cros-system-ui-productivity-eng@google.com</owner>