Reland of Add task queue to Call.

webrtc/media/engine/fakewebrtccall.cc

Index: webrtc/media/engine/fakewebrtccall.cc
diff --git a/webrtc/media/engine/fakewebrtccall.cc b/webrtc/media/engine/fakewebrtccall.cc
index d0655cf3b0eccd40736cbcced40d84ea9336aef5..cb904df66fdcf1275bf722ddb6220968bd0bd8ab 100644
--- a/webrtc/media/engine/fakewebrtccall.cc
+++ b/webrtc/media/engine/fakewebrtccall.cc
@@ -98,21 +98,22 @@ void FakeAudioReceiveStream::SetGain(float gain) {
 }
 
 FakeVideoSendStream::FakeVideoSendStream(
-    const webrtc::VideoSendStream::Config& config,
-    const webrtc::VideoEncoderConfig& encoder_config)
+    webrtc::VideoSendStream::Config config,
+    webrtc::VideoEncoderConfig encoder_config)
     : sending_(false),
-      config_(config),
+      config_(std::move(config)),
       codec_settings_set_(false),
       num_swapped_frames_(0) {
   RTC_DCHECK(config.encoder_settings.encoder != NULL);
-  ReconfigureVideoEncoder(encoder_config);
+  ReconfigureVideoEncoder(std::move(encoder_config));
 }
 
-webrtc::VideoSendStream::Config FakeVideoSendStream::GetConfig() const {
+const webrtc::VideoSendStream::Config& FakeVideoSendStream::GetConfig() const {
   return config_;
 }
 
-webrtc::VideoEncoderConfig FakeVideoSendStream::GetEncoderConfig() const {
+const webrtc::VideoEncoderConfig& FakeVideoSendStream::GetEncoderConfig()
+    const {
   return encoder_config_;
 }
 
@@ -177,8 +178,7 @@ webrtc::VideoSendStream::Stats FakeVideoSendStream::GetStats() {
 }
 
 void FakeVideoSendStream::ReconfigureVideoEncoder(
-    const webrtc::VideoEncoderConfig& config) {
-  encoder_config_ = config;
+    webrtc::VideoEncoderConfig config) {
   if (config.encoder_specific_settings != NULL) {
     if (config_.encoder_settings.payload_name == "VP8") {
       vpx_settings_.vp8 = *reinterpret_cast<const webrtc::VideoCodecVP8*>(
@@ -199,6 +199,7 @@ void FakeVideoSendStream::ReconfigureVideoEncoder(
                     << config_.encoder_settings.payload_name;
     }
   }
+  encoder_config_ = std::move(config);
   codec_settings_set_ = config.encoder_specific_settings != NULL;
   ++num_encoder_reconfigurations_;
 }
@@ -359,10 +360,10 @@ void FakeCall::DestroyAudioReceiveStream(
 }
 
 webrtc::VideoSendStream* FakeCall::CreateVideoSendStream(
-    const webrtc::VideoSendStream::Config& config,
-    const webrtc::VideoEncoderConfig& encoder_config) {
+    webrtc::VideoSendStream::Config config,
+    webrtc::VideoEncoderConfig encoder_config) {
   FakeVideoSendStream* fake_stream =
-      new FakeVideoSendStream(config, encoder_config);
+      new FakeVideoSendStream(std::move(config), std::move(encoder_config));
   video_send_streams_.push_back(fake_stream);
   ++num_created_send_streams_;
   return fake_stream;