Move ChromeExtensionHostMsg_AttachGuest to extensions.

extensions/extensions.gyp

 # Copyright 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 614 matching lines @@
         'renderer/dom_activity_logger.h',
         'renderer/event_bindings.cc',
         'renderer/event_bindings.h',
         'renderer/extension_helper.cc',
         'renderer/extension_helper.h',
         'renderer/extensions_render_frame_observer.cc',
         'renderer/extensions_render_frame_observer.h',
         'renderer/extensions_renderer_client.cc',
         'renderer/extensions_renderer_client.h',
         'renderer/extension_groups.h',
+        'renderer/guest_view/guest_view_internal_custom_bindings.cc',
+        'renderer/guest_view/guest_view_internal_custom_bindings.h',
         'renderer/file_system_natives.cc',
         'renderer/file_system_natives.h',
         'renderer/i18n_custom_bindings.cc',
         'renderer/i18n_custom_bindings.h',
         'renderer/id_generator_custom_bindings.cc',
         'renderer/id_generator_custom_bindings.h',
         'renderer/lazy_background_page_native_handler.cc',
         'renderer/lazy_background_page_native_handler.h',
         'renderer/logging_native_handler.cc',
         'renderer/logging_native_handler.h',
@@ skipping 302 matching lines @@
           'browser/api/cast_channel/logging.proto'
       ],
       'variables': {
           'proto_in_dir': 'browser/api/cast_channel',
           'proto_out_dir': 'extensions/browser/api/cast_channel',
       },
       'includes': [ '../build/protoc.gypi' ]
     },
   ]
 }