Added ConnectionTimeObserver to calculate the times to authenticate and connect.

remoting/protocol/connection_to_host.h

Index: remoting/protocol/connection_to_host.h
diff --git a/remoting/protocol/connection_to_host.h b/remoting/protocol/connection_to_host.h
index a20bd22605986474c53152c975dc089c8bd99b20..22a13debb92360f7122e7b3923caacf07c7e0707 100644
--- a/remoting/protocol/connection_to_host.h
+++ b/remoting/protocol/connection_to_host.h
@@ -8,6 +8,7 @@
 #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"
@@ -106,6 +107,9 @@ class 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