Have Frame::script() return a reference

Source/core/dom/ScriptLoader.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nikolas Zimmermann <zimmermann@kde.org>
  *
  * 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 290 matching lines @@
     if (sourceCode.isEmpty())
         return;
 
     RefPtr<Document> elementDocument(m_element->document());
     RefPtr<Document> contextDocument = elementDocument->contextDocument().get();
     if (!contextDocument)
         return;
 
     Frame* frame = contextDocument->frame();
 
-    bool shouldBypassMainWorldContentSecurityPolicy = (frame && frame->script()->shouldBypassMainWorldContentSecurityPolicy()) || elementDocument->contentSecurityPolicy()->allowScriptNonce(m_element->fastGetAttribute(HTMLNames::nonceAttr));
+    bool shouldBypassMainWorldContentSecurityPolicy = (frame && frame->script().shouldBypassMainWorldContentSecurityPolicy()) || elementDocument->contentSecurityPolicy()->allowScriptNonce(m_element->fastGetAttribute(HTMLNames::nonceAttr));
 
     if (!m_isExternalScript && (!shouldBypassMainWorldContentSecurityPolicy && !elementDocument->contentSecurityPolicy()->allowInlineScript(elementDocument->url(), m_startLineNumber)))
         return;
 
     if (m_isExternalScript && m_resource && !m_resource->mimeTypeAllowedByNosniff()) {
         contextDocument->addConsoleMessage(SecurityMessageSource, ErrorMessageLevel, "Refused to execute script from '" + m_resource->url().elidedString() + "' because its MIME type ('" + m_resource->mimeType() + "') is not executable, and strict MIME type checking is enabled.");
         return;
     }
 
     if (frame) {
         IgnoreDestructiveWriteCountIncrementer ignoreDesctructiveWriteCountIncrementer(m_isExternalScript ? contextDocument.get() : 0);
 
         if (isHTMLScriptLoader(m_element))
             contextDocument->pushCurrentScript(toHTMLScriptElement(m_element));
 
         AccessControlStatus corsCheck = NotSharableCrossOrigin;
         if (sourceCode.resource() && sourceCode.resource()->passesAccessControlCheck(m_element->document().securityOrigin()))
             corsCheck = SharableCrossOrigin;
 
         // Create a script from the script element node, using the script
         // block's source and the script block's type.
         // Note: This is where the script is compiled and actually executed.
-        frame->script()->executeScriptInMainWorld(sourceCode, corsCheck);
+        frame->script().executeScriptInMainWorld(sourceCode, corsCheck);
 
         if (isHTMLScriptLoader(m_element)) {
             ASSERT(contextDocument->currentScript() == m_element);
             contextDocument->popCurrentScript();
         }
     }
 }
 
 void ScriptLoader::stopLoadRequest()
 {
@@ skipping 89 matching lines @@
     if (isHTMLScriptLoader(element))
         return toHTMLScriptElement(element)->loader();
 
     if (isSVGScriptLoader(element))
         return toSVGScriptElement(element)->loader();
 
     return 0;
 }
 
 }