Delete cricket::VideoFrame methods GetYPlane and GetYPitch.

webrtc/media/engine/webrtcvideoframe.h

Index: webrtc/media/engine/webrtcvideoframe.h
diff --git a/webrtc/media/engine/webrtcvideoframe.h b/webrtc/media/engine/webrtcvideoframe.h
index a2034ec77d5911e5dbeaccbd98a948de0dc67399..ee34c414a475cd9bf6a4b647f21c6ab1ccb558b5 100644
--- a/webrtc/media/engine/webrtcvideoframe.h
+++ b/webrtc/media/engine/webrtcvideoframe.h
@@ -68,17 +68,8 @@ class WebRtcVideoFrame : public VideoFrame {
   int width() const override;
   int height() const override;
 
-  const uint8_t* GetYPlane() const override;
-  const uint8_t* GetUPlane() const override;
-  const uint8_t* GetVPlane() const override;
-  uint8_t* GetYPlane() override;
-  uint8_t* GetUPlane() override;
-  uint8_t* GetVPlane() override;
-  int32_t GetYPitch() const override;
-  int32_t GetUPitch() const override;
-  int32_t GetVPitch() const override;
   void* GetNativeHandle() const override;
-  rtc::scoped_refptr<webrtc::VideoFrameBuffer> video_frame_buffer()
+  const rtc::scoped_refptr<webrtc::VideoFrameBuffer>& video_frame_buffer()
       const override;
 
   /* System monotonic clock */