Android: Remove events extensions API.

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 1010 matching lines @@
           ],
         }],
         ['enable_extensions==0', {
           'sources!': [
             'browser/extensions/browser_context_keyed_service_factories.cc',
             'browser/extensions/browser_context_keyed_service_factories.h',
             'browser/extensions/menu_manager.cc',
             'browser/extensions/menu_manager.h',
             'browser/extensions/menu_manager_factory.cc',
             'browser/extensions/menu_manager_factory.h',
+            'browser/extensions/tab_helper.cc',
+            'browser/extensions/tab_helper.h',
           ],
           'sources/': [
             # Handle files in browser/extensions/api. Exclude everything by default, white list
             # files if they are needed for linking.
             # TODO: The re-includes should go away or shrink as extensions are refactored to be
             # less intertwined in the main codebase.
             ['exclude', '^browser/extensions/api/'],
             ['exclude', '^browser/extensions/.*_api\.cc$'],
             ['include', '^browser/extensions/api/activity_log_private/activity_log_private_api.cc'],
             ['include', '^browser/extensions/api/activity_log_private/activity_log_private_api.h'],
@@ skipping 214 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'
 }