Implements frame sniffer to watch iframe loading state.

content/content_renderer.gypi

 # Copyright (c) 2011 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': 'content_renderer',
       'type': 'static_library',
       'dependencies': [
@@ skipping 27 matching lines @@
         'renderer/device_orientation_dispatcher.cc',
         'renderer/device_orientation_dispatcher.h',
         'renderer/devtools_agent.cc',
         'renderer/devtools_agent.h',
         'renderer/devtools_agent_filter.cc',
         'renderer/devtools_agent_filter.h',
         'renderer/devtools_client.cc',
         'renderer/devtools_client.h',
         'renderer/external_popup_menu.cc',
         'renderer/external_popup_menu.h',
+        'renderer/frame_sniffer.cc',
+        'renderer/frame_sniffer.h',
         'renderer/geolocation_dispatcher.cc',
         'renderer/geolocation_dispatcher.h',
         'renderer/gpu/gpu_channel_host.cc',
         'renderer/gpu/gpu_channel_host.h',
         'renderer/gpu/gpu_surface_proxy.cc',
         'renderer/gpu/gpu_surface_proxy.h',
         'renderer/gpu/gpu_video_decode_accelerator_host.cc',
         'renderer/gpu/gpu_video_decode_accelerator_host.h',
         'renderer/gpu/renderer_gl_context.cc',
         'renderer/gpu/renderer_gl_context.h',
@@ skipping 187 matching lines @@
             'renderer/media/video_capture_module_impl.cc',
             'renderer/media/video_capture_module_impl.h',
             'renderer/media/video_capture_module_impl_device_info.cc',
             'renderer/media/video_capture_module_impl_device_info.h',
           ],
         }],
       ],
     },
   ],
 }