Revert of New static method I420Buffer::SetToBlack.

webrtc/media/engine/webrtcvideoframe.cc

 /*
  *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 47 matching lines @@
 }
 
 bool WebRtcVideoFrame::Init(const CapturedFrame* frame, int dw, int dh,
                             bool apply_rotation) {
   return Reset(frame->fourcc, frame->width, frame->height, dw, dh,
                static_cast<uint8_t*>(frame->data), frame->data_size,
                frame->time_stamp / rtc::kNumNanosecsPerMicrosec,
                frame->rotation, apply_rotation);
 }
 
+bool WebRtcVideoFrame::InitToBlack(int w, int h,
+                                   int64_t time_stamp_ns) {
+  InitToEmptyBuffer(w, h, time_stamp_ns);
+  return SetToBlack();
+}
+
 int WebRtcVideoFrame::width() const {
   return video_frame_buffer_ ? video_frame_buffer_->width() : 0;
 }
 
 int WebRtcVideoFrame::height() const {
   return video_frame_buffer_ ? video_frame_buffer_->height() : 0;
 }
 
 const rtc::scoped_refptr<webrtc::VideoFrameBuffer>&
 WebRtcVideoFrame::video_frame_buffer() const {
@@ skipping 135 matching lines @@
       rotated_frame_->video_frame_buffer()->StrideV(),
       orig_width, orig_height,
       static_cast<libyuv::RotationMode>(rotation()));
   if (ret == 0) {
     return rotated_frame_.get();
   }
   return nullptr;
 }
 
 }  // namespace cricket