Movable support for VideoReceiveStream::Config and avoid copies

webrtc/media/engine/fakewebrtccall.h

 /*
  *  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 122 matching lines @@
     webrtc::VideoCodecVP9 vp9;
   } vpx_settings_;
   int num_swapped_frames_;
   webrtc::VideoFrame last_frame_;
   webrtc::VideoSendStream::Stats stats_;
   int num_encoder_reconfigurations_ = 0;
 };
 
 class FakeVideoReceiveStream final : public webrtc::VideoReceiveStream {
  public:
-  explicit FakeVideoReceiveStream(
-      const webrtc::VideoReceiveStream::Config& config);
+  explicit FakeVideoReceiveStream(webrtc::VideoReceiveStream::Config config);
 
-  webrtc::VideoReceiveStream::Config GetConfig();
+  const webrtc::VideoReceiveStream::Config& GetConfig();
 
   bool IsReceiving() const;
 
   void InjectFrame(const webrtc::VideoFrame& frame);
 
   void SetStats(const webrtc::VideoReceiveStream::Stats& stats);
 
  private:
   // webrtc::VideoReceiveStream implementation.
   void Start() override;
@@ skipping 35 matching lines @@
       const webrtc::AudioReceiveStream::Config& config) override;
   void DestroyAudioReceiveStream(
       webrtc::AudioReceiveStream* receive_stream) override;
 
   webrtc::VideoSendStream* CreateVideoSendStream(
       const webrtc::VideoSendStream::Config& config,
       const webrtc::VideoEncoderConfig& encoder_config) override;
   void DestroyVideoSendStream(webrtc::VideoSendStream* send_stream) override;
 
   webrtc::VideoReceiveStream* CreateVideoReceiveStream(
-      const webrtc::VideoReceiveStream::Config& config) override;
+      webrtc::VideoReceiveStream::Config config) override;
   void DestroyVideoReceiveStream(
       webrtc::VideoReceiveStream* receive_stream) override;
   webrtc::PacketReceiver* Receiver() override;
 
   DeliveryStatus DeliverPacket(webrtc::MediaType media_type,
                                const uint8_t* packet,
                                size_t length,
                                const webrtc::PacketTime& packet_time) override;
 
   webrtc::Call::Stats GetStats() const override;
@@ skipping 15 matching lines @@
   std::vector<FakeAudioSendStream*> audio_send_streams_;
   std::vector<FakeVideoReceiveStream*> video_receive_streams_;
   std::vector<FakeAudioReceiveStream*> audio_receive_streams_;
 
   int num_created_send_streams_;
   int num_created_receive_streams_;
 };
 
 }  // namespace cricket
 #endif  // TALK_MEDIA_WEBRTC_WEBRTCVIDEOENGINE2_UNITTEST_H_