Use animated vector icon for app menu notification animation.

ui/views/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("//testing/test.gni")
 import("//ui/base/ui_features.gni")
 import("//ui/ozone/ozone.gni")
 import("//ui/vector_icons/vector_icons.gni")
@@ skipping 94 matching lines @@
     "cocoa/views_nswindow_delegate.h",
     "cocoa/views_nswindow_delegate.mm",
     "cocoa/views_scrollbar_bridge.h",
     "cocoa/views_scrollbar_bridge.mm",
     "cocoa/widget_owner_nswindow_adapter.h",
     "cocoa/widget_owner_nswindow_adapter.mm",
     "color_chooser/color_chooser_listener.h",
     "color_chooser/color_chooser_view.cc",
     "color_chooser/color_chooser_view.h",
     "context_menu_controller.h",
+    "controls/animated_icon_view.cc",
+    "controls/animated_icon_view.h",
     "controls/button/blue_button.cc",
     "controls/button/blue_button.h",
     "controls/button/button.cc",
     "controls/button/button.h",
     "controls/button/checkbox.cc",
     "controls/button/checkbox.h",
     "controls/button/custom_button.cc",
     "controls/button/custom_button.h",
     "controls/button/image_button.cc",
     "controls/button/image_button.h",
@@ skipping 950 matching lines @@
       "//ui/base:test_support",
       "//ui/compositor",
       "//ui/events:test_support",
       "//ui/gl:test_support",
       "//ui/resources",
       "//ui/resources:ui_test_pak",
       "//ui/strings",
     ]
   }
 }