Chromoting to report roundtrip latency

remoting/client/plugin/chromoting_scriptable_object.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.
 
 // This implements the JavaScript class entrypoint for the plugin instance.
 // The Javascript API is defined as follows.
 //
 // interface ChromotingScriptableObject {
 //
 //   // Dimension of the desktop area.
 //   readonly attribute int desktopWidth;
 //   readonly attribute int desktopHeight;
 //
 //   // Connection status.
 //   readonly attribute unsigned short status;
 //
 //   // Statistics.
 //   // Video Bandwidth in bytes per second.
 //   readonly attribute float videoBandwidth;
 //   // Latency for capturing in milliseconds.
 //   readonly attribute int videoCaptureLatency;
 //   // Latency for video encoding in milliseconds.
 //   readonly attribute int videoEncodeLatency;
 //   // Latency for video decoding in milliseconds.
 //   readonly attribute int videoDecodeLatency;
 //   // Latency for rendering in milliseconds.
 //   readonly attribute int videoRenderLatency;
+//   // Latency between an event is sent and a corresponding video packet is
+//   // received.
+//   readonly attribute int roundTripLatency;
 //
 //   // Constants for connection status.
 //   const unsigned short STATUS_UNKNOWN = 0;
 //   const unsigned short STATUS_CONNECTING = 1;
 //   const unsigned short STATUS_INITIALIZING = 2;
 //   const unsigned short STATUS_CONNECTED = 3;
 //   const unsigned short STATUS_CLOSED = 4;
 //   const unsigned short STATUS_FAILED = 5;
 //
 //   // Connection quality.
@@ skipping 162 matching lines @@
   PropertyNameMap property_names_;
   std::vector<PropertyDescriptor> properties_;
   scoped_refptr<PepperXmppProxy> xmpp_proxy_;
 
   ChromotingInstance* instance_;
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_CLIENT_PLUGIN_CHROMOTING_SCRIPTABLE_OBJECT_H_