Enable H.264 video WebRTC behind run-time flag and add WebRtcBrowserTest for H.264

content/content_common.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',
     '../cc/cc.gyp:cc',
     '../components/tracing.gyp:tracing',
     '../device/bluetooth/bluetooth.gyp:device_bluetooth',
@@ skipping 27 matching lines @@
     '../ui/accessibility/accessibility.gyp:ax_gen',
     '../ui/base/ime/ui_base_ime.gyp:ui_base_ime',
     '../ui/base/ui_base.gyp:ui_base',
     '../ui/events/events.gyp:events_ipc',
     '../ui/gfx/gfx.gyp:gfx',
     '../ui/gfx/gfx.gyp:gfx_geometry',
     '../ui/gfx/ipc/gfx_ipc.gyp:gfx_ipc',
     '../ui/gl/gl.gyp:gl',
     '../ui/shell_dialogs/shell_dialogs.gyp:shell_dialogs',
     '../url/url.gyp:url_lib',
+    'content.gyp:common_features',
     'content_common_mojo_bindings.gyp:content_common_mojo_bindings',
   ],
   'include_dirs': [
     '..',
   ],
   'actions': [
     {
       'action_name': 'generate_webkit_version',
       'inputs': [
         '<(script)',
@@ skipping 1027 matching lines @@
         'common/gpu/client/gpu_memory_buffer_impl_ozone.cc',
         'common/gpu/client/gpu_memory_buffer_impl_ozone_native_pixmap.cc',
         'common/gpu/client/gpu_memory_buffer_impl_ozone_native_pixmap.h',
         'common/gpu/gpu_memory_buffer_factory_ozone.cc',
         'common/gpu/gpu_memory_buffer_factory_ozone_native_pixmap.cc',
         'common/gpu/gpu_memory_buffer_factory_ozone_native_pixmap.h',
       ],
     }],
   ],
 }