Add BeginFrameObserverProxy

content/content_browser.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.
 
 {
   'dependencies': [
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../device/vibration/vibration.gyp:device_vibration',
     '../device/vibration/vibration.gyp:device_vibration_mojo_bindings',
@@ skipping 1026 matching lines @@
       'browser/push_messaging/push_messaging_message_filter.cc',
       'browser/push_messaging/push_messaging_message_filter.h',
       'browser/push_messaging/push_messaging_router.cc',
       'browser/push_messaging/push_messaging_router.h',
       'browser/quota_dispatcher_host.cc',
       'browser/quota_dispatcher_host.h',
       'browser/renderer_data_memoizing_store.h',
       'browser/renderer_host/clipboard_message_filter.cc',
       'browser/renderer_host/clipboard_message_filter.h',
       'browser/renderer_host/clipboard_message_filter_mac.mm',
+      'browser/renderer_host/compositor_begin_frame_observer_impl.cc',
+      'browser/renderer_host/compositor_begin_frame_observer_impl.h',
       'browser/renderer_host/compositor_impl_android.cc',
       'browser/renderer_host/compositor_impl_android.h',
       'browser/renderer_host/compositor_resize_lock_aura.cc',
       'browser/renderer_host/compositor_resize_lock_aura.h',
       'browser/renderer_host/database_message_filter.cc',
       'browser/renderer_host/database_message_filter.h',
       'browser/renderer_host/delegated_frame_evictor.cc',
       'browser/renderer_host/delegated_frame_evictor.h',
       'browser/renderer_host/dip_util.cc',
       'browser/renderer_host/dip_util.h',
@@ skipping 940 matching lines @@
         'browser/media/media_web_contents_observer.h',
       ],
     }],
     ['OS == "linux" and use_openssl==1', {
       'dependencies': [
         '../third_party/boringssl/boringssl.gyp:boringssl',
       ],
     }],
   ],
 }