Add GetPreferredFormats method to media::VideoCapturerSource.

content/renderer/media_capture_from_element/html_video_element_capturer_source.h

 // 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.
 
 #ifndef CONTENT_RENDERER_MEDIA_CAPTURE_FROM_ELEMENT_HTML_VIDEO_ELEMENT_CAPTURER_SOURCE_H_
 #define CONTENT_RENDERER_MEDIA_CAPTURE_FROM_ELEMENT_HTML_VIDEO_ELEMENT_CAPTURER_SOURCE_H_
 
 #include "base/callback.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
@@ skipping 30 matching lines @@
   CreateFromWebMediaPlayerImpl(
       blink::WebMediaPlayer* player,
       const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner);
 
   HtmlVideoElementCapturerSource(
       const base::WeakPtr<blink::WebMediaPlayer>& player,
       const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner);
   ~HtmlVideoElementCapturerSource() override;
 
   // media::VideoCapturerSource Implementation.
-  void GetCurrentSupportedFormats(
-      int max_requested_width,
-      int max_requested_height,
-      double max_requested_frame_rate,
-      const VideoCaptureDeviceFormatsCB& callback) override;
+  media::VideoCaptureFormats GetPreferredFormats() override;
   void StartCapture(const media::VideoCaptureParams& params,
                     const VideoCaptureDeliverFrameCB& new_frame_callback,
                     const RunningCallback& running_callback) override;
   void StopCapture() override;
 
  private:
   // This method includes collecting data from the WebMediaPlayer and converting
   // it into a format suitable for MediaStreams.
   void sendNewFrame();
 
@@ skipping 17 matching lines @@
 
   // Used on main render thread to schedule future capture events.
   base::WeakPtrFactory<HtmlVideoElementCapturerSource> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(HtmlVideoElementCapturerSource);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_CAPTURE_FROM_ELEMENT_HTML_VIDEO_ELEMENT_CAPTURER_SOURCE_H_