Chromoting to report roundtrip latency

remoting/proto/internal.proto

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// 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.
 
 // Internal message types that should not be seen outside the protocol
 // directory.
 
 syntax = "proto2";
 
 import "auth.proto";
 import "control.proto";
 import "event.proto";
 
 option optimize_for = LITE_RUNTIME;
 
 package remoting.protocol;
 
 // Represents a message being sent on the control channel.
 message ControlMessage {
   optional SuggestResolutionRequest suggest_resolution = 1;
   optional NotifyResolutionRequest notify_resolution = 2;
   optional BeginSessionRequest begin_session_request = 3;
   optional BeginSessionResponse begin_session_response = 4;
 }
 
 // Defines an event message on the event channel.
 message EventMessage {
-  required int32 timestamp = 1;  // Client timestamp for event
+  required int64 timestamp = 1;  // Client timestamp for event

[Wez, 2011/04/05 13:46:20]

"timestamp" -> "sequence_number"

[Alpha Left Google, 2011/04/08 00:07:20]

Done.

   optional bool dummy = 2;       // Is this a dummy event?
 
   optional KeyEvent key_event = 3;
   optional MouseEvent mouse_event = 4;
 }