Move extension/app default icon into src/extensions

chrome/chrome_repack_chrome_200_percent.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.
 {
   'action_name': 'repack_chrome_resources_200_percent',
   'variables': {
     'pak_inputs': [
       '<(SHARED_INTERMEDIATE_DIR)/components/component_resources_200_percent.pak',
       '<(SHARED_INTERMEDIATE_DIR)/ui/resources/ui_resources_200_percent.pak',
       '<(grit_out_dir)/renderer_resources_200_percent.pak',
@@ skipping 14 matching lines @@
       ['use_athena==1', {
         'pak_inputs': [
           '<(SHARED_INTERMEDIATE_DIR)/athena/resources/athena_resources_200_percent.pak',
         ],
       }],
       ['chromeos==1', {
         'pak_inputs': [
           '<(SHARED_INTERMEDIATE_DIR)/ui/chromeos/resources/ui_chromeos_resources_200_percent.pak',
         ],
       }],
+      ['enable_extensions==1', {
+        'pak_inputs': [
+          '<(SHARED_INTERMEDIATE_DIR)/extensions/extensions_browser_resources_200_percent.pak',
+        ],
+      }],
     ],
   },
   'includes': [ '../build/repack_action.gypi' ],
 }