Do not call OnDecoderTiming before timing values are set.

webrtc/modules/video_coding/timing.cc

 /*
  *  Copyright (c) 2011 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 270 matching lines @@
 int VCMTiming::TargetVideoDelay() const {
   CriticalSectionScoped cs(crit_sect_);
   return TargetDelayInternal();
 }
 
 int VCMTiming::TargetDelayInternal() const {
   return std::max(min_playout_delay_ms_,
                   jitter_delay_ms_ + RequiredDecodeTimeMs() + render_delay_ms_);
 }
 
-void VCMTiming::GetTimings(int* decode_ms,
+bool VCMTiming::GetTimings(int* decode_ms,
                            int* max_decode_ms,
                            int* current_delay_ms,
                            int* target_delay_ms,
                            int* jitter_buffer_ms,
                            int* min_playout_delay_ms,
                            int* render_delay_ms) const {
   CriticalSectionScoped cs(crit_sect_);
   *decode_ms = last_decode_ms_;
   *max_decode_ms = RequiredDecodeTimeMs();
   *current_delay_ms = current_delay_ms_;
   *target_delay_ms = TargetDelayInternal();
   *jitter_buffer_ms = jitter_delay_ms_;
   *min_playout_delay_ms = min_playout_delay_ms_;
   *render_delay_ms = render_delay_ms_;
+  return (num_decoded_frames_ > 0);
 }
 
 }  // namespace webrtc