Remove unused Isolate* parameters from toV8Context()

Source/bindings/v8/custom/V8HTMLDocumentCustom.cpp

Index: Source/bindings/v8/custom/V8HTMLDocumentCustom.cpp
diff --git a/Source/bindings/v8/custom/V8HTMLDocumentCustom.cpp b/Source/bindings/v8/custom/V8HTMLDocumentCustom.cpp
index de14cf2df02ee96e2b99bd8aa9d3218a4e0e8609..aa9a020d01c597fcd5b5148dc78a0a82eccc40c4 100644
--- a/Source/bindings/v8/custom/V8HTMLDocumentCustom.cpp
+++ b/Source/bindings/v8/custom/V8HTMLDocumentCustom.cpp
@@ -58,7 +58,7 @@ void V8HTMLDocument::openMethodCustom(const v8::FunctionCallbackInfo<v8::Value>&
     if (info.Length() > 2) {
         if (RefPtr<LocalFrame> frame = htmlDocument->frame()) {
             // Fetch the global object for the frame.
-            v8::Local<v8::Context> context = toV8Context(info.GetIsolate(), frame.get(), DOMWrapperWorld::current(info.GetIsolate()));
+            v8::Local<v8::Context> context = toV8Context(frame.get(), DOMWrapperWorld::current(info.GetIsolate()));
             // Bail out if we cannot get the context.
             if (context.IsEmpty())
                 return;