Removed calls to RefPtr::Release in return statements with auto move.

third_party/WebKit/Source/platform/bindings/DOMWrapperWorld.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 139 matching lines @@
 #if DCHECK_IS_ON()
   DCHECK(IsIsolatedWorldId(world_id));
 #endif
 
   WorldMap& map = GetWorldMap();
   auto it = map.find(world_id);
   if (it != map.end()) {
     RefPtr<DOMWrapperWorld> world = it->value;
     DCHECK(world->IsIsolatedWorld());
     DCHECK_EQ(world_id, world->GetWorldId());
-    return world.Release();
+    return world;
   }
 
   return AdoptRef(new DOMWrapperWorld(isolate, WorldType::kIsolated, world_id));
 }
 
 typedef HashMap<int, RefPtr<SecurityOrigin>> IsolatedWorldSecurityOriginMap;
 static IsolatedWorldSecurityOriginMap& IsolatedWorldSecurityOrigins() {
   DCHECK(IsMainThread());
   DEFINE_STATIC_LOCAL(IsolatedWorldSecurityOriginMap, map, ());
   return map;
@@ skipping 128 matching lines @@
   DCHECK(script_wrappable);
   DCHECK(IsMainThread());
 
   script_wrappable->UnsetWrapperIfAny();
 
   for (auto& world : GetWorldMap().Values())
     world->DomDataStore().UnsetWrapperIfAny(script_wrappable);
 }
 
 }  // namespace blink