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

remoting/jingle_glue/chromium_socket_factory.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_CHROMIUM_SOCKET_FACTORY_H_
 #define REMOTING_JINGLE_GLUE_CHROMIUM_SOCKET_FACTORY_H_
 
 #include "base/compiler_specific.h"
 #include "third_party/libjingle/source/talk/base/packetsocketfactory.h"
 
 namespace remoting {
 
 class ChromiumPacketSocketFactory : public talk_base::PacketSocketFactory {
  public:
-  explicit ChromiumPacketSocketFactory();
+  ChromiumPacketSocketFactory();
   virtual ~ChromiumPacketSocketFactory();
 
   virtual talk_base::AsyncPacketSocket* CreateUdpSocket(
       const talk_base::SocketAddress& local_address,
       int min_port, int max_port) OVERRIDE;
   virtual talk_base::AsyncPacketSocket* CreateServerTcpSocket(
       const talk_base::SocketAddress& local_address,
       int min_port, int max_port,
       bool ssl) OVERRIDE;
   virtual talk_base::AsyncPacketSocket* CreateClientTcpSocket(
       const talk_base::SocketAddress& local_address,
       const talk_base::SocketAddress& remote_address,
       const talk_base::ProxyInfo& proxy_info,
       const std::string& user_agent,
       bool ssl) OVERRIDE;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ChromiumPacketSocketFactory);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_JINGLE_GLUE_CHROMIUM_SOCKET_FACTORY_H_