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

content/renderer/pepper/pepper_in_process_router.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.
 
 #include "base/callback.h"
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "ppapi/proxy/connection.h"
 #include "ppapi/proxy/resource_message_params.h"
@@ skipping 33 matching lines @@
 // To keep things consistent, we provide an IPC::Sender for the browser channel
 // in the connection object supplied to resources. This dummy browser channel
 // will just assert and delete the message if anything is ever sent over it.
 //
 // There are two restrictions for in-process resource calls:
 // Sync messages can only be sent from the plugin to the host.
 // The host must handle sync messages synchronously.
 class PepperInProcessRouter {
  public:
   // The given host parameter owns this class and must outlive us.
-  PepperInProcessRouter(RendererPpapiHostImpl* host_impl);
+  explicit PepperInProcessRouter(RendererPpapiHostImpl* host_impl);
   ~PepperInProcessRouter();
 
   // Returns the dummy sender for the cooresponding end of the in-process
   // emulated channel.
   IPC::Sender* GetPluginToRendererSender();
   IPC::Sender* GetRendererToPluginSender();
 
   // Returns a connection pair for use by a resource proxy. This includes
   // the plugin->renderer sender as well as a dummy sender to the browser
   // process. See the class comment above about the dummy sender.
@@ skipping 29 matching lines @@
 
   // Reply result of the pending sync message.
   bool reply_result_;
 
   base::WeakPtrFactory<PepperInProcessRouter> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperInProcessRouter);
 };
 
 }  // namespace content