Rename some cricket::VideoFrame methods, to align with webrtc::VideoFrame.

webrtc/media/base/videobroadcaster.cc

Index: webrtc/media/base/videobroadcaster.cc
diff --git a/webrtc/media/base/videobroadcaster.cc b/webrtc/media/base/videobroadcaster.cc
index 704f4081187ecc14320b78c06053a9513b947673..c9a2d99ab5d3e7b97ed48f63a31bcf5eda867bbf 100644
--- a/webrtc/media/base/videobroadcaster.cc
+++ b/webrtc/media/base/videobroadcaster.cc
@@ -98,14 +98,14 @@ const cricket::VideoFrame& VideoBroadcaster::GetBlackFrame(
     const cricket::VideoFrame& frame) {
   if (black_frame_ && black_frame_->width() == frame.width() &&
       black_frame_->height() == frame.height() &&
-      black_frame_->GetVideoRotation() == frame.GetVideoRotation()) {
+      black_frame_->rotation() == frame.rotation()) {
     black_frame_->SetTimeStamp(frame.GetTimeStamp());
     return *black_frame_;
   }
   black_frame_.reset(new cricket::WebRtcVideoFrame(
       new rtc::RefCountedObject<webrtc::I420Buffer>(
           frame.width(), frame.height()),
-      frame.GetTimeStamp(), frame.GetVideoRotation()));
+      frame.GetTimeStamp(), frame.rotation()));
   black_frame_->SetToBlack();
   return *black_frame_;
 }