Convert //chrome/browser/extensions from scoped_ptr to std::unique_ptr

chrome/browser/extensions/api/system_private/system_private_api.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 "chrome/browser/extensions/api/system_private/system_private_api.h"
 
 #include <utility>
 
 #include "base/macros.h"
 #include "base/values.h"
@@ skipping 36 matching lines @@
 const char kNeedRestartState[] = "NeedRestart";
 
 #if defined(OS_CHROMEOS)
 const char kUpdatingState[] = "Updating";
 #endif  // defined(OS_CHROMEOS)
 
 // Dispatches an extension event with |argument|
 void DispatchEvent(extensions::events::HistogramValue histogram_value,
                    const std::string& event_name,
                    base::Value* argument) {
-  scoped_ptr<base::ListValue> list_args(new base::ListValue());
+  std::unique_ptr<base::ListValue> list_args(new base::ListValue());
   if (argument) {
     list_args->Append(argument);
   }
   g_browser_process->extension_event_router_forwarder()
       ->BroadcastEventToRenderers(histogram_value, event_name,
                                   std::move(list_args), GURL());
 }
 
 }  // namespace
 
@@ skipping 98 matching lines @@
   DispatchEvent(extensions::events::SYSTEM_PRIVATE_ON_SCREEN_UNLOCKED,
                 system_private::OnScreenUnlocked::kEventName, NULL);
 }
 
 void DispatchWokeUpEvent() {
   DispatchEvent(extensions::events::SYSTEM_PRIVATE_ON_WOKE_UP,
                 system_private::OnWokeUp::kEventName, NULL);
 }
 
 }  // namespace extensions