Add VideoTrackSource implementation.

webrtc/api/rtpsender.cc

 /*
  *  Copyright 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 302 matching lines @@
   }
   if (can_send_track()) {
     provider_->SetCaptureDevice(ssrc_, nullptr);
     provider_->SetVideoSend(ssrc_, false, nullptr);
   }
   stopped_ = true;
 }
 
 void VideoRtpSender::SetVideoSend() {
   RTC_DCHECK(!stopped_ && can_send_track());
-  const cricket::VideoOptions* options = nullptr;
+  cricket::VideoOptions options;
   VideoTrackSourceInterface* source = track_->GetSource();
-  if (track_->enabled() && source) {
-    options = source->options();
+  if (source) {
+    options.is_screencast = rtc::Optional<bool>(source->is_screencast());
+    options.video_noise_reduction =
+        rtc::Optional<bool>(source->needs_denoising());
   }
-  provider_->SetVideoSend(ssrc_, track_->enabled(), options);
+  provider_->SetVideoSend(ssrc_, track_->enabled(), &options);
 }
 
 }  // namespace webrtc