Pass a TimeTicks along video capture pipeline to represent capture time

content/renderer/pepper/pepper_platform_video_capture.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.
 
 #ifndef CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_VIDEO_CAPTURE_H_
 #define CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_VIDEO_CAPTURE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
+#include "base/time/time.h"
 #include "content/common/media/video_capture.h"
 #include "media/video/capture/video_capture_types.h"
 
 class GURL;
 
 namespace content {
 class PepperMediaDeviceManager;
 class PepperVideoCaptureHost;
 class RenderViewImpl;
 
 // This object must only be used on the thread it's constructed on.
 class PepperPlatformVideoCapture {
  public:
   PepperPlatformVideoCapture(const base::WeakPtr<RenderViewImpl>& render_view,
                              const std::string& device_id,
                              const GURL& document_url,
                              PepperVideoCaptureHost* handler);
   virtual ~PepperPlatformVideoCapture();
 
   // Detaches the event handler and stops sending notifications to it.
   void DetachEventHandler();
 
   void StartCapture(const media::VideoCaptureParams& params);
   void StopCapture();
 
  private:
   void OnDeviceOpened(int request_id, bool succeeded, const std::string& label);
   void OnStateUpdate(VideoCaptureState state);
   void OnFrameReady(const scoped_refptr<media::VideoFrame>& frame,
-                    const media::VideoCaptureFormat& format);
+                    const media::VideoCaptureFormat& format,
+                    const base::TimeTicks& estimated_capture_time);
 
   PepperMediaDeviceManager* GetMediaDeviceManager();
 
   base::WeakPtr<RenderViewImpl> render_view_;
 
   std::string device_id_;
   std::string label_;
   int session_id_;
   base::Closure release_device_cb_;
   base::Closure stop_capture_cb_;
 
   PepperVideoCaptureHost* handler_;
 
   // Whether we have a pending request to open a device. We have to make sure
   // there isn't any pending request before this object goes away.
   bool pending_open_device_;
   int pending_open_device_id_;
 
   base::ThreadChecker thread_checker_;
 
   base::WeakPtrFactory<PepperPlatformVideoCapture> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperPlatformVideoCapture);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_VIDEO_CAPTURE_H_