base::ListValue::Append cleanup: pass unique_ptr instead of the released pointer.

extensions/browser/guest_view/extensions_guest_view_manager_delegate.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/browser/guest_view/extensions_guest_view_manager_delegate.h"
 
 #include <utility>
 
 #include "components/guest_view/browser/guest_view_base.h"
 #include "components/guest_view/browser/guest_view_manager.h"
@@ skipping 27 matching lines @@
 }
 
 void ExtensionsGuestViewManagerDelegate::DispatchEvent(
     const std::string& event_name,
     std::unique_ptr<base::DictionaryValue> args,
     GuestViewBase* guest,
     int instance_id) {
   EventFilteringInfo info;
   info.SetInstanceID(instance_id);
   std::unique_ptr<base::ListValue> event_args(new base::ListValue());
-  event_args->Append(args.release());
+  event_args->Append(std::move(args));
 
   // GetEventHistogramValue maps guest view event names to their histogram
   // value. It needs to be like this because the guest view component doesn't
   // know about extensions, so GuestViewEvent can't have an
   // extensions::events::HistogramValue as an argument.
   events::HistogramValue histogram_value =
       guest_view_events::GetEventHistogramValue(event_name);
   DCHECK_NE(events::UNKNOWN, histogram_value) << "Event " << event_name
                                               << " must have a histogram value";
 
@@ skipping 37 matching lines @@
 void ExtensionsGuestViewManagerDelegate::RegisterAdditionalGuestViewTypes() {
   GuestViewManager* manager = GuestViewManager::FromBrowserContext(context_);
   manager->RegisterGuestViewType<AppViewGuest>();
   manager->RegisterGuestViewType<ExtensionOptionsGuest>();
   manager->RegisterGuestViewType<ExtensionViewGuest>();
   manager->RegisterGuestViewType<MimeHandlerViewGuest>();
   manager->RegisterGuestViewType<WebViewGuest>();
 }
 
 }  // namespace extensions