Add CORS support for <link> elements.

Source/core/html/HTMLLinkElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Google 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
  * version 2 of the License, or (at your option) any later version.
@@ skipping 66 matching lines @@
 
     bool styleSheetIsLoading() const;
     bool hasSheet() const { return m_sheet; }
     bool isDisabled() const { return m_disabledState == Disabled; }
     bool isEnabledViaScript() const { return m_disabledState == EnabledViaScript; }
     bool isUnset() const { return m_disabledState == Unset; }
 
     CSSStyleSheet* sheet() const { return m_sheet.get(); }
 
 private:
-    // From ResourceClient
+    // From StyleSheetResourceClient
     virtual void setCSSStyleSheet(const String& href, const KURL& baseURL, const String& charset, const CSSStyleSheetResource*) OVERRIDE;
 
     enum DisabledState {
         Unset,
         EnabledViaScript,
         Disabled
     };
 
     enum PendingSheetType {
         None,
@@ skipping 51 matching lines @@
 
     void dispatchPendingEvent(LinkEventSender*);
     void scheduleEvent();
     void dispatchEventImmediately();
     static void dispatchPendingLoadEvents();
 
     // From LinkLoaderClient
     virtual bool shouldLoadLink() OVERRIDE;
 
     // For LinkStyle
-    bool loadLink(const String& type, const KURL& url) { return m_linkLoader.loadLink(m_relAttribute, type, url, document()); }
+    bool loadLink(const String&, const KURL&);

[abarth-chromium, 2014/01/28 06:38:45]

I'd probably keep the name |type| for the first argument because it's not clear
from context what it means.

[sof, 2014/01/28 07:23:01]

Yes, added 'type' back here + expanded LinkLoader::loadLink()'s declaration
similarly.

     bool isAlternate() const { return linkStyle()->isUnset() && m_relAttribute.isAlternate(); }
     bool shouldProcessStyle() { return linkResourceToProcess() && linkStyle(); }
     bool isCreatedByParser() const { return m_createdByParser; }
 
 private:
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
 
     LinkStyle* linkStyle() const;
     LinkImport* linkImport() const;
     LinkResource* linkResourceToProcess();
@@ skipping 32 matching lines @@
     bool m_createdByParser;
     bool m_isInShadowTree;
     int m_beforeLoadRecurseCount;
 };
 
 DEFINE_NODE_TYPE_CASTS(HTMLLinkElement, hasTagName(HTMLNames::linkTag));
 
 } //namespace
 
 #endif