Oilpan: DOM wrappers don't need to keep persistent handles

Source/bindings/core/v8/custom/V8InjectedScriptManager.cpp

Index: Source/bindings/core/v8/custom/V8InjectedScriptManager.cpp
diff --git a/Source/bindings/core/v8/custom/V8InjectedScriptManager.cpp b/Source/bindings/core/v8/custom/V8InjectedScriptManager.cpp
index 7cb08e493e8eb20ac70df217713336c1f3d7abea..184136eaa2329cd4ea4b93bf35b4a2aa4448af6f 100644
--- a/Source/bindings/core/v8/custom/V8InjectedScriptManager.cpp
+++ b/Source/bindings/core/v8/custom/V8InjectedScriptManager.cpp
@@ -72,19 +72,11 @@ static v8::Local<v8::Object> createInjectedScriptHostV8Wrapper(PassRefPtrWillBeR
     // Create a weak reference to the v8 wrapper of InspectorBackend to deref
     // InspectorBackend when the wrapper is garbage collected.
     InjectedScriptManager::CallbackData* callbackData = injectedScriptManager->createCallbackData(injectedScriptManager);
-#if ENABLE(OILPAN)
-    callbackData->hostPtr = WrapperPersistent<InjectedScriptHost>::create(host.get());
-#else
     callbackData->host = host.get();
-#endif
     callbackData->handle.set(isolate, wrapper);
     callbackData->handle.setWeak(callbackData, &InjectedScriptManager::setWeakCallback);
 
-#if ENABLE(OILPAN)
-    V8DOMWrapper::setNativeInfoWithPersistentHandle(wrapper, &V8InjectedScriptHost::wrapperTypeInfo, host->toScriptWrappableBase(), callbackData->hostPtr);
-#else
     V8DOMWrapper::setNativeInfo(wrapper, &V8InjectedScriptHost::wrapperTypeInfo, host->toScriptWrappableBase());
-#endif
     ASSERT(V8DOMWrapper::isDOMWrapper(wrapper));
     return wrapper;
 }