Add InputEventTimestampSource interface.

remoting/protocol/video_stream.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 REMOTING_PROTOCOL_VIDEO_STREAM_H_
 #define REMOTING_PROTOCOL_VIDEO_STREAM_H_
 
 #include <stdint.h>
 
 #include <cstdint>
 
 #include "base/callback_forward.h"
+#include "remoting/protocol/input_event_timestamps.h"
 
 namespace webrtc {
 class DesktopSize;
 class DesktopVector;
 }  // namespace webrtc
 
 namespace remoting {
 namespace protocol {
 
 class VideoStream {
  public:
   class Observer {
    public:
     // Called to notify about screen size changes. The size is specified in
     // physical pixels.
     virtual void OnVideoSizeChanged(VideoStream* stream,
                                     const webrtc::DesktopSize& size,
                                     const webrtc::DesktopVector& dpi) = 0;
   };
 
   VideoStream() {}
   virtual ~VideoStream() {}
 
+  // Sets event timestamps source to be used for the video stream.
+  virtual void SetEventTimestampsSource(
+      scoped_refptr<InputEventTimestampsSource> event_timestamps_source) = 0;
+
   // Pauses or resumes scheduling of frame captures. Pausing/resuming captures
   // only affects capture scheduling and does not stop/start the capturer.
   virtual void Pause(bool pause) = 0;
 
-  // Should be called whenever an input event is received.
-  virtual void OnInputEventReceived(int64_t event_timestamp) = 0;
-
   // Sets whether the video encoder should be requested to encode losslessly,
   // or to use a lossless color space (typically requiring higher bandwidth).
   virtual void SetLosslessEncode(bool want_lossless) = 0;
   virtual void SetLosslessColor(bool want_lossless) = 0;
 
   // Sets stream observer.
   virtual void SetObserver(Observer* observer) = 0;
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_VIDEO_STREAM_H_