cc: Remove BeginFrameSourcesConstructor.

cc/cc.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 312 matching lines @@
         'output/software_output_device.h',
         'output/software_renderer.cc',
         'output/software_renderer.h',
         'output/static_geometry_binding.cc',
         'output/static_geometry_binding.h',
         'output/swap_promise.h',
         'output/texture_mailbox_deleter.cc',
         'output/texture_mailbox_deleter.h',
         'output/viewport_selection_bound.cc',
         'output/viewport_selection_bound.h',
-        'output/vsync_parameter_observer.h',
         'playback/clip_display_item.cc',
         'playback/clip_display_item.h',
         'playback/clip_path_display_item.cc',
         'playback/clip_path_display_item.h',
         'playback/compositing_display_item.cc',
         'playback/compositing_display_item.h',
         'playback/display_item.cc',
         'playback/display_item.h',
         'playback/display_item_list.cc',
         'playback/display_item_list.h',
@@ skipping 267 matching lines @@
         'surfaces/surface_resource_holder.cc',
         'surfaces/surface_resource_holder.h',
         'surfaces/surfaces_export.h',
       ],
       'includes': [
         '../build/android/increase_size_for_speed.gypi',
       ],
     },
   ],
 }