Added ConnectionTimeObserver to calculate the times to authenticate and connect.

remoting/protocol/connection_to_host.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_PROTOCOL_CONNECTION_TO_HOST_H_
 #define REMOTING_PROTOCOL_CONNECTION_TO_HOST_H_
 
 #include <string>
 
 #include "base/callback_forward.h"
+#include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "remoting/protocol/errors.h"
 
 namespace remoting {
 
 class SignalStrategy;
 
 namespace protocol {
 
@@ skipping 78 matching lines @@
 
   // Stubs for sending data to the host.
   virtual ClipboardStub* clipboard_forwarder() = 0;
   virtual HostStub* host_stub() = 0;
   virtual InputStub* input_stub() = 0;
 
   // Return the current state of ConnectionToHost.
   virtual State state() const = 0;
 };
 
+// Returns the literal string of |state|.
+const char* ConnectionStateToString(ConnectionToHost::State state);

[Sergey Ulanov, 2015/07/30 21:00:42]

I think I suggested this before: make this a static function in ConnectionToHost
(i.e. ConnectionToHost::StateToString()) as this is where the State enum is
defined.

[tonychun, 2015/07/30 21:43:16]

Done.

+
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_CONNECTION_TO_HOST_H_