Let getSettings() return the constrained track resolution, not source.

content/renderer/media/media_stream_video_track.cc

 // Copyright 2013 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/media/media_stream_video_track.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/location.h"
@@ skipping 284 matching lines @@
   DCHECK(main_render_thread_checker_.CalledOnValidThread());
   if (source_) {
     source_->RemoveTrack(this);
     source_ = NULL;
   }
   OnReadyStateChanged(blink::WebMediaStreamSource::ReadyStateEnded);
 }
 
 void MediaStreamVideoTrack::getSettings(
     blink::WebMediaStreamTrack::Settings& settings) {
-  // TODO(hta): Extract the real value.
-  settings.deviceId = blink::WebString("video device ID");
-  if (!source_)
-    return;
-
   const media::VideoCaptureFormat* format = source_->GetCurrentFormat();
   if (format) {
     settings.frameRate = format->frame_rate;
-    settings.width = format->frame_size.width();
-    settings.height = format->frame_size.height();
     settings.videoKind = GetVideoKindForFormat(*format);
   }
+  if (width_ && height_) {
+    settings.width = width_;
+    settings.height = height_;
+  }
   switch (source_->device_info().device.video_facing) {
     case media::MEDIA_VIDEO_FACING_NONE:
       settings.facingMode = blink::WebMediaStreamTrack::FacingMode::None;
       break;
     case media::MEDIA_VIDEO_FACING_USER:
       settings.facingMode = blink::WebMediaStreamTrack::FacingMode::User;
       break;
     case media::MEDIA_VIDEO_FACING_ENVIRONMENT:
       settings.facingMode = blink::WebMediaStreamTrack::FacingMode::Environment;
       break;
@@ skipping 12 matching lines @@
 }
 
 void MediaStreamVideoTrack::OnReadyStateChanged(
     blink::WebMediaStreamSource::ReadyState state) {
   DCHECK(main_render_thread_checker_.CalledOnValidThread());
   for (auto* sink : sinks_)
     sink->OnReadyStateChanged(state);
 }
 
 }  // namespace content