Add UMA stats for Chromoting connection details.

remoting/client/plugin/chromoting_instance.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 REMOTING_CLIENT_PLUGIN_CHROMOTING_INSTANCE_H_
 #define REMOTING_CLIENT_PLUGIN_CHROMOTING_INSTANCE_H_
 
 #include <string>
 
 #include "base/gtest_prod_util.h"
@@ skipping 270 matching lines @@
 
   // PIN Fetcher.
   bool use_async_pin_dialog_;
   protocol::SecretFetchedCallback secret_fetched_callback_;
 
   base::WeakPtr<TokenFetcherProxy> token_fetcher_proxy_;
 
   // Weak reference to this instance, used for global logging and task posting.
   base::WeakPtrFactory<ChromotingInstance> weak_factory_;
 
+  base::TimeTicks connection_started_time;
+  base::TimeTicks connection_authenticated_time_;
+  base::TimeTicks connection_connected_time_;
+
   DISALLOW_COPY_AND_ASSIGN(ChromotingInstance);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_CLIENT_PLUGIN_CHROMOTING_INSTANCE_H_