Change browser/page action default icon defined in manifest to support hidpi.

chrome/chrome_browser_extensions.gypi

 # Copyright (c) 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_extensions',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 359 matching lines @@
         'browser/extensions/default_apps_trial.cc',
         'browser/extensions/default_apps_trial.h',
         'browser/extensions/event_names.cc',
         'browser/extensions/event_names.h',
         'browser/extensions/event_listener_map.cc',
         'browser/extensions/event_listener_map.h',
         'browser/extensions/event_router.cc',
         'browser/extensions/event_router.h',
         'browser/extensions/event_router_forwarder.cc',
         'browser/extensions/event_router_forwarder.h',
+        'browser/extensions/extension_action_icon_factory.cc',
+        'browser/extensions/extension_action_icon_factory.h',
         'browser/extensions/extension_context_menu_model.cc',
         'browser/extensions/extension_context_menu_model.h',
         'browser/extensions/extension_creator.cc',
         'browser/extensions/extension_creator.h',
         'browser/extensions/extension_creator_filter.cc',
         'browser/extensions/extension_creator_filter.h',
         'browser/extensions/extension_devtools_bridge.cc',
         'browser/extensions/extension_devtools_bridge.h',
         'browser/extensions/extension_devtools_events.cc',
         'browser/extensions/extension_devtools_events.h',
@@ skipping 458 matching lines @@
             'browser/extensions/app_host/update.cc',
             'browser/extensions/app_host/update.h',
             '<(SHARED_INTERMEDIATE_DIR)/chrome_version/app_host_exe_version.rc',
           ],
         },
       ],
     }, ],  # 'OS=="win"'
   ],  # 'conditions'
 }