Add missing (and remove superfluous) 'explicit' from constructors.

remoting/protocol/jingle_messages.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_JINGLE_MESSAGES_H_
 #define REMOTING_PROTOCOL_JINGLE_MESSAGES_H_
 
 #include <list>
 #include <string>
 
@@ skipping 80 matching lines @@
   enum ErrorType {
     NONE,
     BAD_REQUEST,
     NOT_IMPLEMENTED,
     INVALID_SID,
     UNEXPECTED_REQUEST,
     UNSUPPORTED_INFO,
   };
 
   JingleMessageReply();
-  JingleMessageReply(ErrorType error);
+  explicit JingleMessageReply(ErrorType error);
   JingleMessageReply(ErrorType error, const std::string& text);
   ~JingleMessageReply();
 
   // Formats reply stanza for the specified |request_stanza|. Id and
   // recepient as well as other information needed to generate a valid
   // reply are taken from |request_stanza|.
   scoped_ptr<buzz::XmlElement> ToXml(
       const buzz::XmlElement* request_stanza) const;
 
   ReplyType type;
   ErrorType error_type;
   std::string text;
 };
 
 }  // protocol
 }  // remoting
 
 #endif  // REMOTING_PROTOCOL_JINGLE_MESSAGES_H_