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

content/renderer/media/webrtc/webrtc_video_capturer_adapter.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/media/webrtc/webrtc_video_capturer_adapter.h"
 
 #include "base/bind.h"
 #include "base/memory/aligned_memory.h"
 #include "base/trace_event/trace_event.h"
 #include "content/renderer/media/webrtc/webrtc_video_frame_adapter.h"
@@ skipping 77 matching lines @@
     // Create a centered cropped visible rect that preservers aspect ratio for
     // cropped natural size.
     gfx::Rect visible_rect = frame_->visible_rect();
     visible_rect.ClampToCenteredSize(gfx::Size(
         visible_rect.width() * cropped_input_width / input_frame->width,
         visible_rect.height() * cropped_input_height / input_frame->height));
 
     const gfx::Size output_size(output_width, output_height);
     scoped_refptr<media::VideoFrame> video_frame =
         media::VideoFrame::WrapVideoFrame(frame_, visible_rect, output_size);
+    if (!video_frame)
+      return nullptr;
     video_frame->AddDestructionObserver(
         base::Bind(&ReleaseOriginalFrame, frame_));
 
     // If no scaling is needed, return a wrapped version of |frame_| directly.
     if (video_frame->natural_size() == video_frame->visible_rect().size()) {
       return new cricket::WebRtcVideoFrame(
           new rtc::RefCountedObject<WebRtcVideoFrameAdapter>(video_frame),
           timestamp_ns, webrtc::kVideoRotation_0);
     }
 
@@ skipping 122 matching lines @@
       reinterpret_cast<MediaVideoFrameFactory*>(frame_factory());
   media_video_frame_factory->SetFrame(frame);
 
   // This signals to libJingle that a new VideoFrame is available.
   SignalFrameCaptured(this, media_video_frame_factory->GetCapturedFrame());
 
   media_video_frame_factory->ReleaseFrame();  // Release the frame ASAP.
 }
 
 }  // namespace content