Add an extension override bubble and warning box for proxy extensions.

chrome/chrome_browser_extensions.gypi

 # Copyright (c) 2013 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 839 matching lines @@
         'browser/extensions/pending_enables.cc',
         'browser/extensions/pending_enables.h',
         'browser/extensions/pending_extension_info.cc',
         'browser/extensions/pending_extension_info.h',
         'browser/extensions/pending_extension_manager.cc',
         'browser/extensions/pending_extension_manager.h',
         'browser/extensions/permissions_updater.cc',
         'browser/extensions/permissions_updater.h',
         'browser/extensions/plugin_manager.cc',
         'browser/extensions/plugin_manager.h',
+        'browser/extensions/proxy_overridden_bubble_controller.cc',
+        'browser/extensions/proxy_overridden_bubble_controller.h',
         'browser/extensions/requirements_checker.cc',
         'browser/extensions/requirements_checker.h',
         'browser/extensions/sandboxed_unpacker.cc',
         'browser/extensions/sandboxed_unpacker.h',
         'browser/extensions/script_executor.cc',
         'browser/extensions/script_executor.h',
         'browser/extensions/settings_api_helpers.cc',
         'browser/extensions/settings_api_helpers.h',
         'browser/extensions/settings_api_bubble_controller.cc',
         'browser/extensions/settings_api_bubble_controller.h',
@@ skipping 362 matching lines @@
       'type': 'static_library',
       'sources': [ 'browser/extensions/api/cast_channel/cast_channel.proto' ],
       'variables': {
           'proto_in_dir': 'browser/extensions/api/cast_channel',
           'proto_out_dir': 'chrome/browser/extensions/api/cast_channel',
       },
       'includes': [ '../build/protoc.gypi' ]
     },
   ],  # 'conditions'
 }