Avoid calling RtpFrameObject::GetCodecHeader twice in the RtpFrameReferenceFinder.

webrtc/modules/video_coding/rtp_frame_reference_finder.h

 /*
  *  Copyright (c) 2016 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 81 matching lines @@
   // of the frames.
   FrameDecision ManageFrameGeneric(RtpFrameObject* frame, int picture_id)
       EXCLUSIVE_LOCKS_REQUIRED(crit_);
 
   // Find references for Vp8 frames
   FrameDecision ManageFrameVp8(RtpFrameObject* frame)
       EXCLUSIVE_LOCKS_REQUIRED(crit_);
 
   // Updates necessary layer info state used to determine frame references for
   // Vp8.
-  void UpdateLayerInfoVp8(RtpFrameObject* frame)
+  void UpdateLayerInfoVp8(RtpFrameObject* frame,
+                          const RTPVideoHeaderVP8& codec_header)
       EXCLUSIVE_LOCKS_REQUIRED(crit_);
 
   // Find references for Vp9 frames
   FrameDecision ManageFrameVp9(RtpFrameObject* frame)
       EXCLUSIVE_LOCKS_REQUIRED(crit_);
 
   // Check if we are missing a frame necessary to determine the references
   // for this frame.
   bool MissingRequiredFrameVp9(uint16_t picture_id, const GofInfo& info)
       EXCLUSIVE_LOCKS_REQUIRED(crit_);
@@ skipping 99 matching lines @@
   // |cleared_to_seq_num_|.
   int cleared_to_seq_num_ GUARDED_BY(crit_);
 
   OnCompleteFrameCallback* frame_callback_;
 };
 
 }  // namespace video_coding
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_VIDEO_CODING_RTP_FRAME_REFERENCE_FINDER_H_