Verify returned frames from media::VideoFrame::Wrap*() methods

content/renderer/pepper/pepper_media_stream_video_track_host.cc

 // Copyright 2014 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.
 
 #include "content/renderer/pepper/pepper_media_stream_video_track_host.h"
 
 #include <stddef.h>
 
 #include "base/base64.h"
 #include "base/logging.h"
@@ skipping 340 matching lines @@
         plugin_frame_size_,
         gfx::Rect(plugin_frame_size_),
         plugin_frame_size_,
         y_stride,
         uv_stride,
         uv_stride,
         y_data,
         u_data,
         v_data,
         base::TimeDelta::FromMilliseconds(ts_ms));
+    if (!frame)
+      return PP_ERROR_FAILED;
 
     frame_deliverer_->DeliverVideoFrame(frame);
   }
 
   // Makes the frame available again for plugin.
   SendEnqueueBufferMessageToPlugin(index);
   return PP_OK;
 }
 
 void PepperMediaStreamVideoTrackHost::OnVideoFrame(
@@ skipping 154 matching lines @@
 }
 
 void PepperMediaStreamVideoTrackHost::OnTrackStarted(
     MediaStreamSource* source,
     MediaStreamRequestResult result,
     const blink::WebString& result_name) {
   DVLOG(3) << "OnTrackStarted result: " << result;
 }
 
 }  // namespace content