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

remoting/jingle_glue/fake_signal_strategy.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_JINGLE_GLUE_FAKE_SIGNAL_STRATEGY_H_
 #define REMOTING_JINGLE_GLUE_FAKE_SIGNAL_STRATEGY_H_
 
 #include <list>
 #include <queue>
 #include <string>
 
 #include "base/observer_list.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/non_thread_safe.h"
 #include "remoting/jingle_glue/iq_sender.h"
 #include "remoting/jingle_glue/signal_strategy.h"
 
 namespace remoting {
 
 class FakeSignalStrategy : public SignalStrategy,
                            public base::NonThreadSafe {
  public:
   static void Connect(FakeSignalStrategy* peer1, FakeSignalStrategy* peer2);
 
-  FakeSignalStrategy(const std::string& jid);
+  explicit FakeSignalStrategy(const std::string& jid);
   virtual ~FakeSignalStrategy();
 
   const std::list<buzz::XmlElement*>& received_messages() {
     return received_messages_;
   }
 
   // SignalStrategy interface.
   virtual void Connect() OVERRIDE;
   virtual void Disconnect() OVERRIDE;
   virtual State GetState() const OVERRIDE;
@@ skipping 23 matching lines @@
   std::queue<buzz::XmlElement*> pending_messages_;
 
   base::WeakPtrFactory<FakeSignalStrategy> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeSignalStrategy);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_JINGLE_GLUE_FAKE_SIGNAL_STRATEGY_H_