Remove unused Isolate* parameters from toV8Context()

Source/bindings/v8/custom/V8WindowCustom.cpp

 /*
  * Copyright (C) 2009, 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 291 matching lines @@
 private:
     RefPtr<ScriptState> m_scriptState;
     RefPtr<ScriptState> m_scriptStateForDialogFrame;
     v8::Handle<v8::Value> m_dialogArguments;
 };
 
 void DialogHandler::dialogCreated(DOMWindow* dialogFrame)
 {
     if (m_dialogArguments.IsEmpty())
         return;
-    v8::Isolate* isolate = m_scriptState->isolate();
-    v8::Handle<v8::Context> context = toV8Context(isolate, dialogFrame->frame(), m_scriptState->world());
+    v8::Handle<v8::Context> context = toV8Context(dialogFrame->frame(), m_scriptState->world());
     if (context.IsEmpty())
         return;
     m_scriptStateForDialogFrame = ScriptState::from(context);
 
     ScriptState::Scope scope(m_scriptStateForDialogFrame.get());
-    m_scriptStateForDialogFrame->context()->Global()->Set(v8AtomicString(isolate, "dialogArguments"), m_dialogArguments);
+    m_scriptStateForDialogFrame->context()->Global()->Set(v8AtomicString(m_scriptState->isolate(), "dialogArguments"), m_dialogArguments);
 }
 
 v8::Handle<v8::Value> DialogHandler::returnValue() const
 {
     if (!m_scriptStateForDialogFrame)
         return v8Undefined();
     ASSERT(!m_scriptStateForDialogFrame->contextIsEmpty());
 
     v8::Isolate* isolate = m_scriptStateForDialogFrame->isolate();
     v8::EscapableHandleScope handleScope(isolate);
@@ skipping 193 matching lines @@
     // Notice that we explicitly ignore creationContext because the DOMWindow is its own creationContext.
 
     if (!window)
         return v8::Null(isolate);
     // Initializes environment of a frame, and return the global object
     // of the frame.
     LocalFrame* frame = window->frame();
     if (!frame)
         return v8Undefined();
 
-    v8::Handle<v8::Context> context = toV8Context(isolate, frame, DOMWrapperWorld::current(isolate));
+    v8::Handle<v8::Context> context = toV8Context(frame, DOMWrapperWorld::current(isolate));
     if (context.IsEmpty())
         return v8Undefined();
 
     v8::Handle<v8::Object> global = context->Global();
     ASSERT(!global.IsEmpty());
     return global;
 }
 
 } // namespace WebCore