[EXPERIMENTAL] Async copy texture backed frames in WebRtcVideoCapturerAdapter

content/renderer/media/webrtc/webrtc_video_capturer_adapter.h

 // Copyright 2014 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_WEBRTC_WEBRTC_VIDEO_CAPTURER_ADAPTER_H_
 #define CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_CAPTURER_ADAPTER_H_
 
 #include <stdint.h>
 
 #include <vector>
@@ skipping 20 matching lines @@
 class CONTENT_EXPORT WebRtcVideoCapturerAdapter
     : NON_EXPORTED_BASE(public cricket::VideoCapturer) {
  public:
   explicit WebRtcVideoCapturerAdapter(bool is_screencast);
   ~WebRtcVideoCapturerAdapter() override;
 
   // OnFrameCaptured delivers video frames to libjingle. It must be called on
   // libjingles worker thread.
   // This method is virtual for testing purposes.
   virtual void OnFrameCaptured(const scoped_refptr<media::VideoFrame>& frame);
+  void OnFrameCopied(int64_t translated_camera_time_us,
+                     const scoped_refptr<media::VideoFrame>& frame);
 
  private:
   // cricket::VideoCapturer implementation.
   // These methods are accessed from a libJingle worker thread.
   cricket::CaptureState Start(
       const cricket::VideoFormat& capture_format) override;
   void Stop() override;
   bool IsRunning() override;
   bool GetPreferredFourccs(std::vector<uint32_t>* fourccs) override;
   bool GetBestCaptureFormat(const cricket::VideoFormat& desired,
                             cricket::VideoFormat* best_format) override;
   bool IsScreencast() const override;
 
+  // Helper class used for copying texture backed frames.
+  class TextureFrameCopier;
+  const scoped_refptr<TextureFrameCopier> texture_copier_;
+
   // |thread_checker_| is bound to the libjingle worker thread.
   base::ThreadChecker thread_checker_;
 
   const bool is_screencast_;
   bool running_;
 
   media::VideoFramePool scaled_frame_pool_;
 
   DISALLOW_COPY_AND_ASSIGN(WebRtcVideoCapturerAdapter);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_CAPTURER_ADAPTER_H_