Have Node::document() return a reference instead of a pointer

Source/core/scripts/make_names.pl

 #!/usr/bin/perl -w
 
 # Copyright (C) 2005, 2006, 2007, 2009 Apple Inc. All rights reserved.
 # Copyright (C) 2009, Julien Chaffraix <jchaffraix@webkit.org>
 # Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
 # Copyright (C) 2011 Ericsson AB. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
 # are met:
@@ skipping 960 matching lines @@
         my $conditional = $enabledTags{$tagName}{conditional};
         if ($conditional) {
             my $conditionalString = "ENABLE(" . join(") && ENABLE(", split(/&/, $conditional)) . ")";
             print F "#if ${conditionalString}\n\n";
         }
 
         if ($enabledTags{$tagName}{wrapperOnlyIfMediaIsAvailable}) {
             print F <<END
 static v8::Handle<v8::Object> create${JSInterfaceName}Wrapper($parameters{namespace}Element* element, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
-    Settings* settings = element->document()->settings();
+    Settings* settings = element->document().settings();
     if (!RuntimeEnabledFeatures::mediaEnabled() || (settings && !settings->mediaEnabled()))
         return createV8$parameters{namespace}DirectWrapper(element, creationContext, isolate);
     return wrap(static_cast<${JSInterfaceName}*>(element), creationContext, isolate);
 }
 
 END
 ;
         } elsif ($enabledTags{$tagName}{contextConditional}) {
             my $contextConditional = $enabledTags{$tagName}{contextConditional};
             print F <<END
 static v8::Handle<v8::Object> create${JSInterfaceName}Wrapper($parameters{namespace}Element* element, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
-    if (!ContextFeatures::${contextConditional}Enabled(element->document()))
+    if (!ContextFeatures::${contextConditional}Enabled(&element->document()))
         return createV8$parameters{namespace}FallbackWrapper(to$parameters{fallbackInterfaceName}(element), creationContext, isolate);
     return wrap(static_cast<${JSInterfaceName}*>(element), creationContext, isolate);
 }
 END
 ;
         } elsif ($enabledTags{$tagName}{runtimeConditional}) {
             my $runtimeConditional = $enabledTags{$tagName}{runtimeConditional};
             print F <<END
 static v8::Handle<v8::Object> create${JSInterfaceName}Wrapper($parameters{namespace}Element* element, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
@@ skipping 267 matching lines @@
     print F StaticString::GenerateStringImpls(\%parameters);
 
     while ( my ($name, $identifier) = each %parameters ) {
         print F "    new ((void*)&$name) AtomicString(${name}Impl);\n";
     }
 
     print F "}\n}\n}\n";
     close F;
     exit 0;
 }