Add MediaStreamSource frame rate calculation to the tracker.

content/common/media/media_param_traits.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/common/media/media_param_traits.h"
 
 #include "base/strings/stringprintf.h"
 #include "media/audio/audio_parameters.h"
 #include "media/base/limits.h"
 #include "media/video/capture/video_capture_types.h"
@@ skipping 44 matching lines @@
                                        std::string* l) {
   l->append(base::StringPrintf("<AudioParameters>"));
 }
 
 void ParamTraits<VideoCaptureFormat>::Write(Message* m,
                                             const VideoCaptureFormat& p) {
   // Crash during Send rather than have a failure at the message handler.
   m->WriteInt(p.frame_size.width());
   m->WriteInt(p.frame_size.height());
   m->WriteFloat(p.frame_rate);
+  m->WriteInt(p.number_of_dropped_frames);
   m->WriteInt(static_cast<int>(p.pixel_format));
 }
 
 bool ParamTraits<VideoCaptureFormat>::Read(const Message* m,
                                            PickleIterator* iter,
                                            VideoCaptureFormat* r) {
   int frame_size_width, frame_size_height, pixel_format;
   if (!m->ReadInt(iter, &frame_size_width) ||
       !m->ReadInt(iter, &frame_size_height) ||
       !m->ReadFloat(iter, &r->frame_rate) ||
+      !m->ReadInt(iter, &r->number_of_dropped_frames) ||
       !m->ReadInt(iter, &pixel_format))
     return false;
 
   r->frame_size.SetSize(frame_size_width, frame_size_height);
   r->pixel_format = static_cast<VideoPixelFormat>(pixel_format);
   if (!r->IsValid())
     return false;
   return true;
 }
 
 void ParamTraits<VideoCaptureFormat>::Log(const VideoCaptureFormat& p,
                                           std::string* l) {
   l->append(base::StringPrintf("<VideoCaptureFormat>"));
 }
 
 }