Revert of [oilpan]: optimize the way we allocate persistent handles in wrappers.

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 c18871e1b49153d6e265be8d9276762647d20355..c160830df185cfb4819f9bbdbb43cbde84a7cd5f 100644
--- a/Source/bindings/core/v8/custom/V8InjectedScriptManager.cpp
+++ b/Source/bindings/core/v8/custom/V8InjectedScriptManager.cpp
@@ -72,16 +72,12 @@ 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 = new WrapperPersistent<InjectedScriptHost>(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);
+    V8DOMWrapper::setNativeInfoWithPersistentHandle(wrapper, &V8InjectedScriptHost::wrapperTypeInfo, host->toScriptWrappableBase(), &callbackData->host);
 #else
     V8DOMWrapper::setNativeInfo(wrapper, &V8InjectedScriptHost::wrapperTypeInfo, host->toScriptWrappableBase());
 #endif