Delete obsolete cricket::VideoFrame method names.

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 cda00275f70d2d87b6a20105fa14a474a8459e08..5fa69619dee9b536ef50258c1793515f34b15a74 100644
--- a/webrtc/media/engine/webrtcvideoframe.cc
+++ b/webrtc/media/engine/webrtcvideoframe.cc
@@ -83,10 +83,6 @@ bool WebRtcVideoFrame::IsExclusive() const {
   return video_frame_buffer_->IsMutable();
 }
 
-void* WebRtcVideoFrame::GetNativeHandle() const {
-  return video_frame_buffer_ ? video_frame_buffer_->native_handle() : nullptr;
-}
-
 const rtc::scoped_refptr<webrtc::VideoFrameBuffer>&
 WebRtcVideoFrame::video_frame_buffer() const {
   return video_frame_buffer_;
@@ -193,7 +189,7 @@ const VideoFrame* WebRtcVideoFrame::GetCopyWithRotationApplied() const {
   // If the video frame is backed up by a native handle, it resides in the GPU
   // memory which we can't rotate here. The assumption is that the renderers
   // which uses GPU to render should be able to rotate themselves.
-  RTC_DCHECK(!GetNativeHandle());
+  RTC_DCHECK(!video_frame_buffer()->native_handle());
 
   if (rotated_frame_) {
     return rotated_frame_.get();