Remove GetCurrentVideoTrackFormat dead code.

content/public/renderer/media_stream_utils.cc

 // Copyright 2015 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/public/renderer/media_stream_utils.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/callback.h"
@@ skipping 77 matching lines @@
   web_media_stream_source.setExtraData(media_stream_source);
 
   blink::WebMediaStreamTrack web_media_stream_track;
   web_media_stream_track.initialize(web_media_stream_source);
   if (!media_stream_source->ConnectToTrack(web_media_stream_track))
     return false;
   web_media_stream->addTrack(web_media_stream_track);
   return true;
 }
 
-const media::VideoCaptureFormat* GetCurrentVideoTrackFormat(
-    const blink::WebMediaStreamTrack& video_track) {
-  if (video_track.isNull())
-    return nullptr;
-
-  MediaStreamVideoSource* const source =
-      MediaStreamVideoSource::GetVideoSource(video_track.source());
-  if (!source)
-    return nullptr;
-
-  return source->GetCurrentFormat();
-}
-
 void RequestRefreshFrameFromVideoTrack(
     const blink::WebMediaStreamTrack& video_track) {
   if (video_track.isNull())
     return;
   MediaStreamVideoSource* const source =
       MediaStreamVideoSource::GetVideoSource(video_track.source());
   if (source)
     source->RequestRefreshFrame();
 }
 
 }  // namespace content