Revert of New static method I420Buffer::SetToBlack.

webrtc/media/base/videoframe.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 130 matching lines @@
                   dst->video_frame_buffer()->StrideY(),
                   dst->video_frame_buffer()->StrideU(),
                   dst->video_frame_buffer()->StrideV(),
                   dst->width(), dst->height(),
                   interpolate, vert_crop);
   dst->SetTimeStamp(GetTimeStamp());
   // Stretched frame should have the same rotation as the source.
   dst->set_rotation(rotation());
 }
 
+bool VideoFrame::SetToBlack() {
+  return libyuv::I420Rect(video_frame_buffer()->MutableDataY(),
+                          video_frame_buffer()->StrideY(),
+                          video_frame_buffer()->MutableDataU(),
+                          video_frame_buffer()->StrideU(),
+                          video_frame_buffer()->MutableDataV(),
+                          video_frame_buffer()->StrideV(),
+                          0, 0,
+                          width(), height(),
+                          16, 128, 128) == 0;
+}
+
 static const size_t kMaxSampleSize = 1000000000u;
 // Returns whether a sample is valid.
 bool VideoFrame::Validate(uint32_t fourcc,
                           int w,
                           int h,
                           const uint8_t* sample,
                           size_t sample_size) {
   if (h < 0) {
     h = -h;
   }
@@ skipping 130 matching lines @@
                  << " expected: " << expected_size
                  << " sample[0..3]: " << static_cast<int>(four_samples[0])
                  << ", " << static_cast<int>(four_samples[1])
                  << ", " << static_cast<int>(four_samples[2])
                  << ", " << static_cast<int>(four_samples[3]);
   }
   return true;
 }
 
 }  // namespace cricket