Allow MediaStream constraints to specify higher than 30 FPS tab capture.

content/renderer/pepper/pepper_media_stream_video_track_host.cc

 // Copyright 2014 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/renderer/pepper/pepper_media_stream_video_track_host.h"
 
 #include "base/base64.h"
 #include "base/logging.h"
 #include "base/rand_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 408 matching lines @@
   buffer->size.width = size.width();
   buffer->size.height = size.height();
   buffer->data_size = frame_data_size_;
   ConvertFromMediaVideoFrame(frame, ppformat, size, buffer->data);
 
   SendEnqueueBufferMessageToPlugin(index);
 }
 
 void PepperMediaStreamVideoTrackHost::GetCurrentSupportedFormats(
     int max_requested_width, int max_requested_height,
+    double max_requested_frame_rate,
     const VideoCaptureDeviceFormatsCB& callback) {
   if (type_ != kWrite) {
     DVLOG(1) << "GetCurrentSupportedFormats is only supported in output mode.";
     callback.Run(media::VideoCaptureFormats());
     return;
   }
 
   media::VideoCaptureFormats formats;
   formats.push_back(
       media::VideoCaptureFormat(plugin_frame_size_,
@@ skipping 97 matching lines @@
            base::Unretained(this)),
        enabled);
 }
 
 void PepperMediaStreamVideoTrackHost::OnTrackStarted(
     MediaStreamSource* source, bool success) {
   DVLOG(3) << "OnTrackStarted result: " << success;
 }
 
 }  // namespace content