Added new VideoFrameBuffer methods Data[YUV]() etc.

webrtc/media/engine/webrtcvideoframe.cc

Index: webrtc/media/engine/webrtcvideoframe.cc
diff --git a/webrtc/media/engine/webrtcvideoframe.cc b/webrtc/media/engine/webrtcvideoframe.cc
index 3a2d2def0e3af094681610aab54803ad0a98eba1..3e7de67217642f5d5cc48bc8410c0bf84d9823f6 100644
--- a/webrtc/media/engine/webrtcvideoframe.cc
+++ b/webrtc/media/engine/webrtcvideoframe.cc
@@ -74,15 +74,15 @@ int WebRtcVideoFrame::height() const {
 }
 
 const uint8_t* WebRtcVideoFrame::GetYPlane() const {
-  return video_frame_buffer_ ? video_frame_buffer_->data(kYPlane) : nullptr;
+  return video_frame_buffer_ ? video_frame_buffer_->DataY() : nullptr;
 }
 
 const uint8_t* WebRtcVideoFrame::GetUPlane() const {
-  return video_frame_buffer_ ? video_frame_buffer_->data(kUPlane) : nullptr;
+  return video_frame_buffer_ ? video_frame_buffer_->DataU() : nullptr;
 }
 
 const uint8_t* WebRtcVideoFrame::GetVPlane() const {
-  return video_frame_buffer_ ? video_frame_buffer_->data(kVPlane) : nullptr;
+  return video_frame_buffer_ ? video_frame_buffer_->DataV() : nullptr;
 }
 
 uint8_t* WebRtcVideoFrame::GetYPlane() {
@@ -101,15 +101,15 @@ uint8_t* WebRtcVideoFrame::GetVPlane() {
 }
 
 int32_t WebRtcVideoFrame::GetYPitch() const {
-  return video_frame_buffer_ ? video_frame_buffer_->stride(kYPlane) : 0;
+  return video_frame_buffer_ ? video_frame_buffer_->StrideY() : 0;
 }
 
 int32_t WebRtcVideoFrame::GetUPitch() const {
-  return video_frame_buffer_ ? video_frame_buffer_->stride(kUPlane) : 0;
+  return video_frame_buffer_ ? video_frame_buffer_->StrideU() : 0;
 }
 
 int32_t WebRtcVideoFrame::GetVPitch() const {
-  return video_frame_buffer_ ? video_frame_buffer_->stride(kVPlane) : 0;
+  return video_frame_buffer_ ? video_frame_buffer_->StrideV() : 0;
 }
 
 bool WebRtcVideoFrame::IsExclusive() const {