Change RefPtr<DOMWrapperWorld> that causes reference cycles to DOMWrapperWorld*

Source/bindings/v8/V8CustomElementLifecycleCallbacks.cpp

Index: Source/bindings/v8/V8CustomElementLifecycleCallbacks.cpp
diff --git a/Source/bindings/v8/V8CustomElementLifecycleCallbacks.cpp b/Source/bindings/v8/V8CustomElementLifecycleCallbacks.cpp
index b8d3d3e6e7553dcfa2cd9b57e509bb491525296a..24c0826b30d77e1cc27efb86f1a099844318dfbf 100644
--- a/Source/bindings/v8/V8CustomElementLifecycleCallbacks.cpp
+++ b/Source/bindings/v8/V8CustomElementLifecycleCallbacks.cpp
@@ -115,7 +115,7 @@ V8PerContextData* V8CustomElementLifecycleCallbacks::creationContextData()
     if (!executionContext())
         return 0;
 
-    v8::Handle<v8::Context> context = toV8Context(executionContext(), m_world.get());
+    v8::Handle<v8::Context> context = toV8Context(executionContext(), m_world);
     if (context.IsEmpty())
         return 0;
 
@@ -159,7 +159,7 @@ void V8CustomElementLifecycleCallbacks::created(Element* element)
     element->setCustomElementState(Element::Upgraded);
 
     v8::HandleScope handleScope(m_isolate);
-    v8::Handle<v8::Context> context = toV8Context(executionContext(), m_world.get());
+    v8::Handle<v8::Context> context = toV8Context(executionContext(), m_world);
     if (context.IsEmpty())
         return;
 
@@ -211,7 +211,7 @@ void V8CustomElementLifecycleCallbacks::attributeChanged(Element* element, const
         return;
 
     v8::HandleScope handleScope(m_isolate);
-    v8::Handle<v8::Context> context = toV8Context(executionContext(), m_world.get());
+    v8::Handle<v8::Context> context = toV8Context(executionContext(), m_world);
     if (context.IsEmpty())
         return;
 
@@ -246,7 +246,7 @@ void V8CustomElementLifecycleCallbacks::call(const ScopedPersistent<v8::Function
         return;
 
     v8::HandleScope handleScope(m_isolate);
-    v8::Handle<v8::Context> context = toV8Context(executionContext(), m_world.get());
+    v8::Handle<v8::Context> context = toV8Context(executionContext(), m_world);
     if (context.IsEmpty())
         return;