Prevent zero division in VCMJitterEstimator.

webrtc/modules/video_coding/jitter_estimator.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 411 matching lines @@
     if (group == "Disabled") {
       low_rate_experiment_ = kDisabled;
     } else {
       low_rate_experiment_ = kEnabled;
     }
   }
   return low_rate_experiment_ == kEnabled ? true : false;
 }
 
 double VCMJitterEstimator::GetFrameRate() const {
-  if (fps_counter_.count() == 0)
+  if (fps_counter_.ComputeMean() == 0.0)
     return 0;
 
   double fps = 1000000.0 / fps_counter_.ComputeMean();
   // Sanity check.
   assert(fps >= 0.0);
   if (fps > kMaxFramerateEstimate) {
     fps = kMaxFramerateEstimate;
   }
   return fps;
 }
 }  // namespace webrtc