Remove unused MediaStreamVideoTrack ctor

BUG=919392
R=guidou@chromium.org, haraken@chromium.org

Change-Id: Ia1d237955345a66881d75627f18b734d243b69c4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2216593Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Antonio Gomes <tonikitoo@igalia.com>
Cr-Commit-Position: refs/heads/master@{#772195}

third_party/blink/public/web/modules/mediastream/media_stream_video_track.h

@@ -44,11 +44,6 @@ class BLINK_MODULES_EXPORT MediaStreamVideoTrack
       MediaStreamVideoSource* source,
       MediaStreamVideoSource::ConstraintsOnceCallback callback,
       bool enabled);
-  static blink::WebMediaStreamTrack CreateVideoTrack(
-      const blink::WebString& id,
-      MediaStreamVideoSource* source,
-      MediaStreamVideoSource::ConstraintsOnceCallback callback,
-      bool enabled);
   static blink::WebMediaStreamTrack CreateVideoTrack(
       MediaStreamVideoSource* source,
       const VideoTrackAdapterSettings& adapter_settings,

third_party/blink/renderer/modules/mediastream/media_stream_video_track.cc

@@ -348,19 +348,6 @@ WebMediaStreamTrack MediaStreamVideoTrack::CreateVideoTrack(
   return track;
 }
 
-// static
-WebMediaStreamTrack MediaStreamVideoTrack::CreateVideoTrack(
-    const WebString& id,
-    MediaStreamVideoSource* source,
-    MediaStreamVideoSource::ConstraintsOnceCallback callback,
-    bool enabled) {
-  WebMediaStreamTrack track;
-  track.Initialize(id, source->Owner());
-  track.SetPlatformTrack(std::make_unique<MediaStreamVideoTrack>(
-      source, std::move(callback), enabled));
-  return track;
-}
-
 // static
 WebMediaStreamTrack MediaStreamVideoTrack::CreateVideoTrack(
     MediaStreamVideoSource* source,