Convert //ppapi to use std::unique_ptr

ppapi/proxy/ppp_messaging_proxy.cc

 // 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 "ppapi/proxy/ppp_messaging_proxy.h"
 
 #include <algorithm>
 
+#include "base/memory/ptr_util.h"
 #include "ppapi/c/ppp_messaging.h"
 #include "ppapi/proxy/host_dispatcher.h"
 #include "ppapi/proxy/message_handler.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/plugin_resource_tracker.h"
 #include "ppapi/proxy/plugin_var_tracker.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/serialized_var.h"
 #include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/proxy_lock.h"
@@ skipping 93 matching lines @@
 }
 
 void PPP_Messaging_Proxy::OnMsgHandleBlockingMessage(
     PP_Instance instance,
     SerializedVarReceiveInput message_data,
     IPC::Message* reply_msg) {
   ScopedPPVar received_var(message_data.GetForInstance(dispatcher(), instance));
   MessageHandler* message_handler = GetMessageHandler(dispatcher(), instance);
   if (message_handler) {
     if (message_handler->LoopIsValid()) {
-      message_handler->HandleBlockingMessage(
-          received_var, scoped_ptr<IPC::Message>(reply_msg));
+      message_handler->HandleBlockingMessage(received_var,
+                                             base::WrapUnique(reply_msg));
       return;
     } else {
       // If the MessageHandler's loop has been quit, then we should treat it as
       // though it has been unregistered. Also see the note for PostMessage.
       ResetMessageHandler(dispatcher(), instance);
     }
   }
   // We have no handler, but we still need to respond to unblock the renderer
   // and inform the JavaScript caller.
   PpapiMsg_PPPMessageHandler_HandleBlockingMessage::WriteReplyParams(
       reply_msg,
       SerializedVarReturnValue::Convert(dispatcher(), PP_MakeUndefined()),
       false /* was_handled */);
   dispatcher()->Send(reply_msg);
 }
 
 
 }  // namespace proxy
 }  // namespace ppapi