Convert //ppapi to use std::unique_ptr

chrome/browser/renderer_host/pepper/chrome_browser_pepper_host_factory.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.
 
 #ifndef CHROME_BROWSER_RENDERER_HOST_PEPPER_CHROME_BROWSER_PEPPER_HOST_FACTORY_H_
 #define CHROME_BROWSER_RENDERER_HOST_PEPPER_CHROME_BROWSER_PEPPER_HOST_FACTORY_H_
 
 #include "base/macros.h"
 #include "ppapi/host/host_factory.h"
 
 namespace content {
 class BrowserPpapiHost;
 }  // namespace content
 
 class ChromeBrowserPepperHostFactory : public ppapi::host::HostFactory {
  public:
   // Non-owning pointer to the filter must outlive this class.
   explicit ChromeBrowserPepperHostFactory(content::BrowserPpapiHost* host);
   ~ChromeBrowserPepperHostFactory() override;
 
-  scoped_ptr<ppapi::host::ResourceHost> CreateResourceHost(
+  std::unique_ptr<ppapi::host::ResourceHost> CreateResourceHost(
       ppapi::host::PpapiHost* host,
       PP_Resource resource,
       PP_Instance instance,
       const IPC::Message& message) override;
 
  private:
   // Non-owning pointer.
   content::BrowserPpapiHost* host_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserPepperHostFactory);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_PEPPER_CHROME_BROWSER_PEPPER_HOST_FACTORY_H_