Simplify HTMLPlugInElement::PluginWrapper to not use SharedPersistent.

third_party/WebKit/Source/bindings/core/v8/custom/V8HTMLPlugInElementCustom.cpp

Index: third_party/WebKit/Source/bindings/core/v8/custom/V8HTMLPlugInElementCustom.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/custom/V8HTMLPlugInElementCustom.cpp b/third_party/WebKit/Source/bindings/core/v8/custom/V8HTMLPlugInElementCustom.cpp
index 292585f580b27aeb3c47347be26e30e6bc7e0c44..0e45e09a2067098302dd5bac8f51428086552b78 100644
--- a/third_party/WebKit/Source/bindings/core/v8/custom/V8HTMLPlugInElementCustom.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/custom/V8HTMLPlugInElementCustom.cpp
@@ -47,11 +47,7 @@ void GetScriptableObjectProperty(
     const AtomicString& name,
     const v8::PropertyCallbackInfo<v8::Value>& info) {
   HTMLPlugInElement* impl = ElementType::toImpl(info.Holder());
-  RefPtr<SharedPersistent<v8::Object>> wrapper = impl->PluginWrapper();
-  if (!wrapper)
-    return;
-
-  v8::Local<v8::Object> instance = wrapper->NewLocal(info.GetIsolate());
+  v8::Local<v8::Object> instance = impl->PluginWrapper();
   if (instance.IsEmpty())
     return;
 
@@ -76,12 +72,7 @@ void SetScriptableObjectProperty(
   DCHECK(!value.IsEmpty());
 
   HTMLPlugInElement* impl = ElementType::toImpl(info.Holder());
-  RefPtr<SharedPersistent<v8::Object>> wrapper = impl->PluginWrapper();
-  if (!wrapper)
-    return;
-
-  v8::Local<v8::Object> instance = wrapper->NewLocal(info.GetIsolate());
-
+  v8::Local<v8::Object> instance = impl->PluginWrapper();
   if (instance.IsEmpty())
     return;