Revert to zero-initializing buffers for FFmpegVideoDecoder

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 88 matching lines @@
     if (video_frame->natural_size() == video_frame->visible_rect().size()) {
       return new cricket::WebRtcVideoFrame(
           new rtc::RefCountedObject<WebRtcVideoFrameAdapter>(video_frame),
           captured_frame_.elapsed_time, timestamp_ns);
     }
 
     // We need to scale the frame before we hand it over to cricket.
     scoped_refptr<media::VideoFrame> scaled_frame =
         scaled_frame_pool_.CreateFrame(media::PIXEL_FORMAT_I420, output_size,
                                        gfx::Rect(output_size), output_size,
-                                       frame_->timestamp());
+                                       frame_->timestamp(), false);
     libyuv::I420Scale(video_frame->visible_data(media::VideoFrame::kYPlane),
                       video_frame->stride(media::VideoFrame::kYPlane),
                       video_frame->visible_data(media::VideoFrame::kUPlane),
                       video_frame->stride(media::VideoFrame::kUPlane),
                       video_frame->visible_data(media::VideoFrame::kVPlane),
                       video_frame->stride(media::VideoFrame::kVPlane),
                       video_frame->visible_rect().width(),
                       video_frame->visible_rect().height(),
                       scaled_frame->data(media::VideoFrame::kYPlane),
                       scaled_frame->stride(media::VideoFrame::kYPlane),
@@ skipping 117 matching lines @@
       reinterpret_cast<MediaVideoFrameFactory*>(frame_factory());
   media_video_frame_factory->SetFrame(frame, elapsed_time);
 
   // 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