Refactor extension app icon.

chrome/browser/extensions/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
 import("//extensions/features/features.gni")
 import("//media/media_options.gni")
 import("//rlz/features/features.gni")
@@ skipping 521 matching lines @@
     "extension_action.cc",
     "extension_action.h",
     "extension_action_icon_factory.cc",
     "extension_action_icon_factory.h",
     "extension_action_manager.cc",
     "extension_action_manager.h",
     "extension_action_runner.cc",
     "extension_action_runner.h",
     "extension_action_storage_manager.cc",
     "extension_action_storage_manager.h",
+    "extension_app_icon.cc",
+    "extension_app_icon.h",
+    "extension_app_icon_delegate.h",
     "extension_app_icon_loader.cc",
     "extension_app_icon_loader.h",
+    "extension_app_icon_service.cc",
+    "extension_app_icon_service.h",
+    "extension_app_icon_service_factory.cc",
+    "extension_app_icon_service_factory.h",
     "extension_assets_manager.cc",
     "extension_assets_manager.h",
     "extension_assets_manager_chromeos.cc",
     "extension_assets_manager_chromeos.h",
     "extension_commands_global_registry.cc",
     "extension_commands_global_registry.h",
     "extension_context_menu_model.cc",
     "extension_context_menu_model.h",
     "extension_cookie_monster_delegate.cc",
     "extension_cookie_monster_delegate.h",
@@ skipping 625 matching lines @@
       "api/braille_display_private/brlapi_connection.cc",
       "api/braille_display_private/brlapi_connection.h",
       "api/braille_display_private/brlapi_keycode_map.cc",
       "api/braille_display_private/brlapi_keycode_map.h",
     ]
     deps += [ "//build/linux/libbrlapi" ]
   } else {
     sources += [ "api/braille_display_private/braille_controller_stub.cc" ]
   }
 }