Update ppapi/ to use scoped_refptr<T>::get() rather than implicit "operator T*"

ppapi/host/resource_message_filter.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/host/resource_message_filter.h"
 
 #include "base/message_loop.h"
 #include "base/message_loop_proxy.h"
 #include "base/task_runner.h"
 #include "ipc/ipc_message.h"
@@ skipping 22 matching lines @@
   resource_host_ = resource_host;
 }
 
 void ResourceMessageFilter::OnFilterDestroyed() {
   resource_host_ = NULL;
 }
 
 bool ResourceMessageFilter::HandleMessage(const IPC::Message& msg,
                                           HostMessageContext* context) {
   scoped_refptr<base::TaskRunner> runner = OverrideTaskRunnerForMessage(msg);
-  if (runner) {
+  if (runner.get()) {
     // TODO(raymes): We need to make a copy so the context can be used on other
     // threads. It would be better to have a thread-safe refcounted context.
     HostMessageContext context_copy = *context;
     runner->PostTask(FROM_HERE, base::Bind(
         &ResourceMessageFilter::DispatchMessage, this, msg, context_copy));
     return true;
   }
 
   return false;
 }
@@ skipping 14 matching lines @@
   return NULL;
 }
 
 void ResourceMessageFilter::DispatchMessage(const IPC::Message& msg,
                                             HostMessageContext context) {
   RunMessageHandlerAndReply(msg, &context);
 }
 
 }  // namespace host
 }  // namespace ppapi