Have Frame::script() return a reference

Source/bindings/scripts/code_generator_v8.pm

 # Copyright (C) 2005, 2006 Nikolas Zimmermann <zimmermann@kde.org>
 # Copyright (C) 2006 Anders Carlsson <andersca@mac.com>
 # Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
 # Copyright (C) 2006 Alexey Proskuryakov <ap@webkit.org>
 # Copyright (C) 2006 Apple Computer, Inc.
 # Copyright (C) 2007, 2008, 2009, 2012 Google Inc.
 # Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
 # Copyright (C) Research In Motion Limited 2010. All rights reserved.
 # Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
 # Copyright (C) 2012 Ericsson AB. All rights reserved.
@@ skipping 4847 matching lines @@
     $code .= <<END;
     v8::Handle<v8::Object> wrapper = ${v8ClassName}::createWrapper(impl, creationContext, isolate);
 END
     if ($isDocument) {
         AddToImplIncludes("bindings/v8/V8WindowShell.h");
         $code .= <<END;
     if (wrapper.IsEmpty())
         return wrapper;
     if (!isolatedWorldForEnteredContext()) {
         if (Frame* frame = impl->frame())
-            frame->script()->windowShell(mainThreadNormalWorld())->updateDocumentWrapper(wrapper);
+            frame->script().windowShell(mainThreadNormalWorld())->updateDocumentWrapper(wrapper);
     }
 END
     }
     $code .= <<END;
     return wrapper;
 }
 
 END
     $implementation{nameSpaceWebCore}->add($code);
 }
@@ skipping 42 matching lines @@
 
 END
 
     $code .= <<END if ($baseType ne $interfaceName);
 END
 
     if (InheritsInterface($interface, "Document")) {
         AddToImplIncludes("core/frame/Frame.h");
         $code .= <<END;
     if (Frame* frame = impl->frame()) {
-        if (frame->script()->initializeMainWorld()) {
+        if (frame->script().initializeMainWorld()) {
             // initializeMainWorld may have created a wrapper for the object, retry from the start.
             v8::Handle<v8::Object> wrapper = DOMDataStore::getWrapper<${v8ClassName}>(impl.get(), isolate);
             if (!wrapper.IsEmpty())
                 return wrapper;
         }
     }
 END
     }
 
     $code .= <<END;
@@ skipping 1252 matching lines @@
     my $interface = shift;
 
     return 1 if $interface->extendedAttributes->{"CustomToV8"};
     return 1 if $interface->extendedAttributes->{"SpecialWrapFor"};
     return 1 if InheritsInterface($interface, "Document");
 
     return 0;
 }
 
 1;