Convert //extensions/renderer from scoped_ptr to std::unique_ptr

extensions/renderer/api/display_source/display_source_session.cc

 // Copyright 2015 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 "extensions/renderer/api/display_source/display_source_session.h"
 
 #if defined(ENABLE_WIFI_DISPLAY)
 #include "extensions/renderer/api/display_source/wifi_display/wifi_display_session.h"
 #endif
 
@@ skipping 17 matching lines @@
 void DisplaySourceSession::SetNotificationCallbacks(
     const base::Closure& terminated_callback,
     const ErrorCallback& error_callback) {
   DCHECK(terminated_callback_.is_null());
   DCHECK(error_callback_.is_null());
 
   terminated_callback_ = terminated_callback;
   error_callback_ = error_callback;
 }
 
-scoped_ptr<DisplaySourceSession> DisplaySourceSessionFactory::CreateSession(
+std::unique_ptr<DisplaySourceSession>
+DisplaySourceSessionFactory::CreateSession(
     const DisplaySourceSessionParams& params) {
 #if defined(ENABLE_WIFI_DISPLAY)
-  return scoped_ptr<DisplaySourceSession>(new WiFiDisplaySession(params));
+  return std::unique_ptr<DisplaySourceSession>(new WiFiDisplaySession(params));
 #endif
   return nullptr;
 }
 
 }  // namespace extensions