Split feature definitions into extensions and chrome features.

chrome/chrome_repack_resources.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_resources',
   'variables': {
     'pak_inputs': [
       '<(SHARED_INTERMEDIATE_DIR)/chrome/chrome_unscaled_resources.pak',
       '<(SHARED_INTERMEDIATE_DIR)/components/component_resources.pak',
+      '<(SHARED_INTERMEDIATE_DIR)/extensions/extensions_resources.pak',
       '<(SHARED_INTERMEDIATE_DIR)/net/net_resources.pak',
       '<(SHARED_INTERMEDIATE_DIR)/ui/ui_resources/webui_resources.pak',
       '<(grit_out_dir)/browser_resources.pak',
       '<(grit_out_dir)/common_resources.pak',
       '<(grit_out_dir)/invalidations_resources.pak',
       '<(grit_out_dir)/memory_internals_resources.pak',
       '<(grit_out_dir)/net_internals_resources.pak',
       '<(grit_out_dir)/password_manager_internals_resources.pak',
       '<(grit_out_dir)/signin_internals_resources.pak',
       '<(grit_out_dir)/sync_internals_resources.pak',
@@ skipping 25 matching lines @@
       }],
       ['enable_extensions==1', {
         'pak_inputs': [
           '<(grit_out_dir)/extensions_api_resources.pak',
         ],
       }],
     ],
   },
   'includes': [ '../build/repack_action.gypi' ],
 }