Remove the remaining ScriptState::current etc

Source/bindings/v8/V8Callback.h

 /*
 * Copyright (C) 2012 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 26 matching lines @@
 #include <v8.h>
 
 namespace WebCore {
 
 class ExecutionContext;
 
 // Returns false if the callback threw an exception, true otherwise.
 bool invokeCallback(ScriptState*, v8::Local<v8::Function> callback, int argc, v8::Handle<v8::Value> argv[]);
 bool invokeCallback(ScriptState*, v8::Local<v8::Function> callback, v8::Handle<v8::Object> thisObject, int argc, v8::Handle<v8::Value> argv[]);
 
+// FIXME: This file is used only by V8GeolocationCustom.cpp. Remove the custom binding and this file.
 enum CallbackAllowedValueFlag {
     CallbackAllowUndefined = 1,
     CallbackAllowNull = 1 << 1
 };
 
 typedef unsigned CallbackAllowedValueFlags;
 
 // 'FunctionOnly' is assumed for the created callback.
 template <typename V8CallbackType>
 PassOwnPtr<V8CallbackType> createFunctionOnlyCallback(v8::Local<v8::Value> value, unsigned index, bool& succeeded, v8::Isolate* isolate, ExceptionState& exceptionState, CallbackAllowedValueFlags acceptedValues = 0)
@@ skipping 12 matching lines @@
         exceptionState.throwIfNeeded();
         return nullptr;
     }
 
     return V8CallbackType::create(v8::Handle<v8::Function>::Cast(value), ScriptState::current(isolate));
 }
 
 } // namespace WebCore
 
 #endif // V8Callback_h