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

content/renderer/p2p/socket_dispatcher.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.
 
 // P2PSocketDispatcher is a per-renderer object that dispatchers all
 // P2P messages received from the browser and relays all P2P messages
 // sent to the browser. P2PSocketClient instances register themselves
 // with the dispatcher using RegisterClient() and UnregisterClient().
 //
 // Relationship of classes.
@@ skipping 36 matching lines @@
 
 namespace content {
 
 class RenderViewImpl;
 class P2PHostAddressRequest;
 class P2PSocketClient;
 
 class CONTENT_EXPORT P2PSocketDispatcher
     : public IPC::ChannelProxy::MessageFilter {
  public:
-  P2PSocketDispatcher(base::MessageLoopProxy* ipc_message_loop);
+  explicit P2PSocketDispatcher(base::MessageLoopProxy* ipc_message_loop);
 
   // Add a new network list observer. Each observer is called
   // immidiately after it is registered and then later whenever
   // network configuration changes. Can be called on any thread. The
   // observer is always called on the thread it was added.
   void AddNetworkListObserver(
       webkit_glue::NetworkListObserver* network_list_observer);
 
   // Removes network list observer. Must be called on the thread on
   // which the observer was added.
@@ skipping 50 matching lines @@
       network_list_observers_;
 
   IPC::Channel* channel_;
 
   DISALLOW_COPY_AND_ASSIGN(P2PSocketDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_P2P_SOCKET_DISPATCHER_H_