Don't reconfigure the encoder if the video options aren't changing.

webrtc/media/engine/fakewebrtccall.cc

 /*
  *  Copyright (c) 2015 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 157 matching lines @@
                               config.encoder_specific_settings);
     } else if (config_.encoder_settings.payload_name == "VP9") {
       vpx_settings_.vp9 = *reinterpret_cast<const webrtc::VideoCodecVP9*>(
                               config.encoder_specific_settings);
     } else {
       ADD_FAILURE() << "Unsupported encoder payload: "
                     << config_.encoder_settings.payload_name;
     }
   }
   codec_settings_set_ = config.encoder_specific_settings != NULL;
+  ++num_encoder_reconfigurations_;
   return true;
 }
 
 webrtc::VideoCaptureInput* FakeVideoSendStream::Input() {
   return this;
 }
 
 void FakeVideoSendStream::Start() {
   sending_ = true;
 }
@@ skipping 229 matching lines @@
 }
 
 void FakeCall::SignalNetworkState(webrtc::NetworkState state) {
   network_state_ = state;
 }
 
 void FakeCall::OnSentPacket(const rtc::SentPacket& sent_packet) {
   last_sent_packet_ = sent_packet;
 }
 }  // namespace cricket