Have Frame::script() return a reference

Source/core/html/HTMLFrameElementBase.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Simon Hausmann (hausmann@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2006, 2008, 2009 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 76 matching lines @@
     KURL url = document().completeURL(m_URL);
     if (protocolIsJavaScript(m_URL)) {
         scriptURL = url;
         url = blankURL();
     }
 
     if (!loadOrRedirectSubframe(url, m_frameName, lockBackForwardList))
         return;
     if (!contentFrame() || scriptURL.isEmpty())
         return;
-    contentFrame()->script()->executeScriptIfJavaScriptURL(scriptURL);
+    contentFrame()->script().executeScriptIfJavaScriptURL(scriptURL);
 }
 
 void HTMLFrameElementBase::parseAttribute(const QualifiedName& name, const AtomicString& value)
 {
     if (name == srcdocAttr)
         setLocation("about:srcdoc");
     else if (name == srcAttr && !fastHasAttribute(srcdocAttr))
         setLocation(stripLeadingAndTrailingHTMLSpaces(value));
     else if (isIdAttributeName(name)) {
         // Important to call through to base for the id attribute so the hasID bit gets set.
@@ skipping 112 matching lines @@
 
 int HTMLFrameElementBase::height()
 {
     document().updateLayoutIgnorePendingStylesheets();
     if (!renderBox())
         return 0;
     return renderBox()->height();
 }
 
 } // namespace WebCore