Revert of Add an ASSERT about cross-world wrapper leakage into ScriptValue

Source/bindings/v8/custom/V8InjectedScriptHostCustom.cpp

Index: Source/bindings/v8/custom/V8InjectedScriptHostCustom.cpp
diff --git a/Source/bindings/v8/custom/V8InjectedScriptHostCustom.cpp b/Source/bindings/v8/custom/V8InjectedScriptHostCustom.cpp
index cdc97cb12422a90581f12170bdfb24d0abd7b3fc..596d8c1cb78f5e971af32f20303f95092db3ac28 100644
--- a/Source/bindings/v8/custom/V8InjectedScriptHostCustom.cpp
+++ b/Source/bindings/v8/custom/V8InjectedScriptHostCustom.cpp
@@ -64,9 +64,9 @@
 
 namespace WebCore {
 
-Node* InjectedScriptHost::scriptValueAsNode(ScriptState* scriptState, ScriptValue value)
-{
-    ScriptState::Scope scope(scriptState);
+Node* InjectedScriptHost::scriptValueAsNode(ScriptValue value)
+{
+    v8::HandleScope scope(value.isolate());
     if (!value.isObject() || value.isNull())
         return 0;
     return V8Node::toNative(v8::Handle<v8::Object>::Cast(value.v8Value()));