Added ConnectionTimeObserver to calculate the times to authenticate and connect.

remoting/protocol/errors.h

Index: remoting/protocol/errors.h
diff --git a/remoting/protocol/errors.h b/remoting/protocol/errors.h
index 7f4daf64031c6b8d4341c24da623b72bef84894a..8b93992a2417bb95c7fcdb6de78e0d842d9cf738 100644
--- a/remoting/protocol/errors.h
+++ b/remoting/protocol/errors.h
@@ -5,6 +5,12 @@
 #ifndef REMOTING_PROTOCOL_ERROR_H_
 #define REMOTING_PROTOCOL_ERROR_H_
 
+#include "base/logging.h"
+
+#define RETURN_STRING_LITERAL(x) \
+case x: \
+return #x;
+
 namespace remoting {
 namespace protocol {
 
@@ -25,6 +31,24 @@ enum ErrorCode {
   UNKNOWN_ERROR,
 };
 
+inline const char* ErrorCodeToString(ErrorCode error) {

[joedow, 2015/07/29 20:09:31]

remove inline

+  switch (error) {
+    RETURN_STRING_LITERAL(OK);
+    RETURN_STRING_LITERAL(PEER_IS_OFFLINE);
+    RETURN_STRING_LITERAL(SESSION_REJECTED);
+    RETURN_STRING_LITERAL(INCOMPATIBLE_PROTOCOL);
+    RETURN_STRING_LITERAL(AUTHENTICATION_FAILED);
+    RETURN_STRING_LITERAL(CHANNEL_CONNECTION_ERROR);
+    RETURN_STRING_LITERAL(SIGNALING_ERROR);
+    RETURN_STRING_LITERAL(SIGNALING_TIMEOUT);
+    RETURN_STRING_LITERAL(HOST_OVERLOAD);
+    RETURN_STRING_LITERAL(UNKNOWN_ERROR);
+    default:
+      LOG(ERROR) << "Unknown error: '" << error << "'";
+      return "UNKNOWN ERROR";
+  }
+}
+
 }  // namespace protocol
 }  // namespace remoting