Moves calling TaskbarList::SetOverlayIcon to a separate thread. It

chrome/chrome_browser_ui.gypi

 # Copyright 2012 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.
 
 {
   'targets': [
     {
       'target_name': 'browser_ui',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 1556 matching lines @@
         'browser/ui/views/frame/opaque_browser_frame_view.cc',
         'browser/ui/views/frame/opaque_browser_frame_view.h',
         'browser/ui/views/frame/popup_non_client_frame_view.cc',
         'browser/ui/views/frame/popup_non_client_frame_view.h',
         'browser/ui/views/frame/system_menu_insertion_delegate_win.cc',
         'browser/ui/views/frame/system_menu_insertion_delegate_win.h',
         'browser/ui/views/frame/system_menu_model_builder.cc',
         'browser/ui/views/frame/system_menu_model_builder.h',
         'browser/ui/views/frame/system_menu_model_delegate.cc',
         'browser/ui/views/frame/system_menu_model_delegate.h',
+        'browser/ui/views/frame/taskbar_decorator.cc',
+        'browser/ui/views/frame/taskbar_decorator.h',
+        'browser/ui/views/frame/taskbar_decorator_win.cc',
         'browser/ui/views/fullscreen_exit_bubble_views.cc',
         'browser/ui/views/fullscreen_exit_bubble_views.h',
         'browser/ui/views/global_error_bubble_view.cc',
         'browser/ui/views/global_error_bubble_view.h',
         'browser/ui/views/home_button.cc',
         'browser/ui/views/home_button.h',
         'browser/ui/views/hung_renderer_view.cc',
         'browser/ui/views/hung_renderer_view.h',
         'browser/ui/views/hung_renderer_view_win.cc',
         'browser/ui/views/hung_renderer_view_win.h',
@@ skipping 1130 matching lines @@
             'browser/ui/views/network_profile_bubble_view.h',
             'browser/ui/webui/conflicts_ui.cc',
             'browser/ui/webui/conflicts_ui.h',
           ],
           'sources!': [
             'browser/ui/certificate_dialogs.cc',
             'browser/ui/certificate_dialogs.h',
             'browser/ui/crypto_module_password_dialog.cc',
             'browser/ui/crypto_module_password_dialog_nss.cc',
             'browser/ui/startup/autolaunch_prompt.cc',
+            'browser/ui/views/frame/taskbar_decorator.cc',
             'browser/ui/views/simple_message_box_views.cc',
             'browser/ui/webui/help/version_updater_basic.cc',
             'browser/ui/webui/help/version_updater_basic.h',
             'browser/ui/webui/tab_modal_confirm_dialog_webui.cc',
             'browser/ui/webui/tab_modal_confirm_dialog_webui.h',
           ],
           'conditions': [
             ['win_use_allocator_shim==1', {
               'dependencies': [
                 '<(allocator_target)',
@@ skipping 89 matching lines @@
         }],
         ['enable_message_center==1', {
           'dependencies': [
             '../ui/message_center/message_center.gyp:message_center',
           ],
         }],
       ],
     },
   ],
 }