Decouple capture timestamp and reference time

content/browser/renderer_host/media/video_capture_host.h

 // Copyright (c) 2012 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.
 //
 // VideoCaptureHost serves video capture related messages from
 // VideoCaptureMessageFilter which lives inside the render process.
 //
 // This class is owned by RenderProcessHostImpl, and instantiated on UI
 // thread, but all other operations and method calls happen on IO thread.
 //
@@ skipping 73 matching lines @@
                        int length,
                        int buffer_id) override;
   void OnBufferCreated2(VideoCaptureControllerID id,
                         const std::vector<gfx::GpuMemoryBufferHandle>& handles,
                         const gfx::Size& size,
                         int buffer_id) override;
   void OnBufferDestroyed(VideoCaptureControllerID id,
                          int buffer_id) override;
   void OnBufferReady(VideoCaptureControllerID id,
                      int buffer_id,
-                     const scoped_refptr<media::VideoFrame>& frame,
-                     const base::TimeTicks& timestamp) override;
+                     const scoped_refptr<media::VideoFrame>& frame) override;
   void OnEnded(VideoCaptureControllerID id) override;
 
  private:
   friend class BrowserThread;
   friend class base::DeleteHelper<VideoCaptureHost>;
   friend class MockVideoCaptureHost;
   friend class VideoCaptureHostTest;
 
   void DoError(VideoCaptureControllerID id);
   void DoEnded(VideoCaptureControllerID id);
@@ skipping 58 matching lines @@
   // is connected. An entry in this map holds a null controller while it is in
   // the process of starting.
   EntryMap entries_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoCaptureHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_HOST_H_