Have Frame::script() return a reference

Source/bindings/v8/V8EventListener.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 67 matching lines @@
     if (!context)
         return v8::Local<v8::Value>();
 
     if (!context->isDocument())
         return v8::Local<v8::Value>();
 
     Frame* frame = toDocument(context)->frame();
     if (!frame)
         return v8::Local<v8::Value>();
 
-    if (!frame->script()->canExecuteScripts(AboutToExecuteScript))
+    if (!frame->script().canExecuteScripts(AboutToExecuteScript))
         return v8::Local<v8::Value>();
 
     v8::Handle<v8::Value> parameters[1] = { jsEvent };
-    return frame->script()->callFunction(handlerFunction, receiver, WTF_ARRAY_LENGTH(parameters), parameters);
+    return frame->script().callFunction(handlerFunction, receiver, WTF_ARRAY_LENGTH(parameters), parameters);
 }
 
 } // namespace WebCore