Remove implicit conversions from scoped_refptr to T* in chrome/browser/extensions/api/

chrome/browser/extensions/api/system_info/system_info_provider.cc

 // Copyright 2013 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 "chrome/browser/extensions/api/system_info/system_info_provider.h"
 
 #include "base/bind.h"
 #include "content/public/browser/browser_thread.h"
 
 namespace extensions {
@@ skipping 41 matching lines @@
   }
 
   is_waiting_for_completion_ = false;
 }
 
 void SystemInfoProvider::StartQueryInfoPostInitialization() {
   PrepareQueryOnUIThread();
   // Post the custom query info task to blocking pool for information querying
   // and reply with OnQueryCompleted.
   base::PostTaskAndReplyWithResult(
-      worker_pool_,
+      worker_pool_.get(),
       FROM_HERE,
       base::Bind(&SystemInfoProvider::QueryInfo, this),
       base::Bind(&SystemInfoProvider::OnQueryCompleted, this));
 }
 
 }  // namespace extensions