Chromoting to report roundtrip latency

remoting/host/screen_recorder.h

 // Copyright (c) 2011 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_HOST_SCREEN_RECORDER_H_
 #define REMOTING_HOST_SCREEN_RECORDER_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
-#include "base/scoped_ptr.h"
 #include "base/time.h"
 #include "base/timer.h"
 #include "remoting/base/encoder.h"
 #include "remoting/host/capturer.h"
 #include "remoting/proto/video.pb.h"
 
 namespace remoting {
 
 namespace protocol {
 class ConnectionToClient;
@@ skipping 72 matching lines @@
 
   // Add a connection to this recording session.
   void AddConnection(scoped_refptr<protocol::ConnectionToClient> connection);
 
   // Remove a connection from receiving screen updates.
   void RemoveConnection(scoped_refptr<protocol::ConnectionToClient> connection);
 
   // Remove all connections.
   void RemoveAllConnections();
 
+  // Update the sequence number for tracing performance.
+  void UpdateSequenceNumber(int64 sequence_number);
+
  private:
   // Getters for capturer and encoder.
   Capturer* capturer();
   Encoder* encoder();
 
   // Capturer thread ----------------------------------------------------------
 
   void DoStart();
   void DoStop(Task* done_task);
   void DoCompleteStop(Task* done_task);
@@ skipping 78 matching lines @@
 
   // Number of captures to perform every second. Written on the capture thread.
   double max_rate_;
 
   // Time when capture is started.
   base::Time capture_start_time_;
 
   // Time when encode is started.
   base::Time encode_start_time_;
 
+  // This is a number updated by client to trace performance.
+  int64 sequence_number_;
+
   DISALLOW_COPY_AND_ASSIGN(ScreenRecorder);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_SCREEN_RECORDER_H_