Add ContextMenu support upstream for Android

chrome/chrome_browser_ui.gypi

 # Copyright 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_ui',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 75 matching lines @@
         'browser/ui/android/infobars/infobar_android.cc',
         'browser/ui/android/infobars/infobar_android.h',
         'browser/ui/android/infobars/infobar_container_android.cc',
         'browser/ui/android/infobars/infobar_container_android.h',
         'browser/ui/android/infobars/translate_infobar.cc',
         'browser/ui/android/infobars/translate_infobar.h',
         'browser/ui/android/certificate_viewer_android.cc',
         'browser/ui/android/chrome_http_auth_handler.cc',
         'browser/ui/android/chrome_http_auth_handler.h',
         'browser/ui/android/color_chooser_dialog_android.cc',
+        'browser/ui/android/context_menu_helper.cc',
+        'browser/ui/android/context_menu_helper.h',
         'browser/ui/android/extensions/extension_install_dialog_android.cc',
         'browser/ui/android/extensions/extension_install_ui_android.cc',
         'browser/ui/android/extensions/extension_install_ui_android.h',
         'browser/ui/android/extensions/extension_view_android.cc',
         'browser/ui/android/extensions/extension_view_android.h',
         'browser/ui/android/external_protocol_dialog_android.cc',
         'browser/ui/android/javascript_app_modal_dialog_android.cc',
         'browser/ui/android/login_prompt_android.cc',
         'browser/ui/android/navigation_popup.cc',
         'browser/ui/android/navigation_popup.h',
@@ skipping 3237 matching lines @@
             'browser/ui/webui/local_discovery/local_discovery_ui.cc',
             'browser/ui/webui/local_discovery/local_discovery_ui.h',
             'browser/ui/webui/local_discovery/local_discovery_ui_handler.cc',
             'browser/ui/webui/local_discovery/local_discovery_ui_handler.h',
           ],
         }],
       ],
     },
   ],
 }