Remove unused Isolate* parameters from toV8Context()

Source/bindings/v8/V8Binding.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 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 586 matching lines @@
     if (context->isDocument()) {
         if (LocalFrame* frame = toDocument(context)->frame())
             return frame->script().windowShell(world)->context();
     } else if (context->isWorkerGlobalScope()) {
         if (WorkerScriptController* script = toWorkerGlobalScope(context)->script())
             return script->context();
     }
     return v8::Local<v8::Context>();
 }
 
-v8::Local<v8::Context> toV8Context(v8::Isolate* isolate, LocalFrame* frame, DOMWrapperWorld& world)
+v8::Local<v8::Context> toV8Context(LocalFrame* frame, DOMWrapperWorld& world)
 {
     if (!frame)
         return v8::Local<v8::Context>();
     v8::Local<v8::Context> context = frame->script().windowShell(world)->context();
     if (context.IsEmpty())
         return v8::Local<v8::Context>();
     LocalFrame* attachedFrame= toFrameIfNotDetached(context);
     return frame == attachedFrame ? context : v8::Local<v8::Context>();
 }
 
@@ skipping 167 matching lines @@
 PassRefPtr<TraceEvent::ConvertableToTraceFormat> devToolsTraceEventData(ExecutionContext* context, v8::Handle<v8::Function> function, v8::Isolate* isolate)
 {
     int scriptId = 0;
     String resourceName;
     int lineNumber = 1;
     GetDevToolsFunctionInfo(function, isolate, scriptId, resourceName, lineNumber);
     return InspectorFunctionCallEvent::data(context, scriptId, resourceName, lineNumber);
 }
 
 } // namespace WebCore