External Stylesheets preloaded according to their media attribute

Source/WebCore/html/parser/HTMLResourcePreloader.h

 /*
  * Copyright (C) 2013 Google Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 15 matching lines @@
 #ifndef HTMLResourcePreloader_h
 #define HTMLResourcePreloader_h
 
 #include "CachedResource.h"
 #include "CachedResourceRequest.h"
 
 namespace WebCore {
 
 class PreloadRequest {
 public:
+    static PassOwnPtr<PreloadRequest> create(const String& initiator, const String& resourceURL, const KURL& baseURL, CachedResource::Type resourceType, const String& mediaAttribute)
+    {
+        return adoptPtr(new PreloadRequest(initiator, resourceURL, baseURL, resourceType, mediaAttribute));
+    }
+
     static PassOwnPtr<PreloadRequest> create(const String& initiator, const String& resourceURL, const KURL& baseURL, CachedResource::Type resourceType)
     {
-        return adoptPtr(new PreloadRequest(initiator, resourceURL, baseURL, resourceType));
+        return adoptPtr(new PreloadRequest(initiator, resourceURL, baseURL, resourceType, ""));
     }
 
     bool isSafeToSendToAnotherThread() const;
 
     CachedResourceRequest resourceRequest(Document*);
 
     const String& charset() const { return m_charset; }
+    const String& media() const { return m_mediaAttribute; }
     void setCharset(const String& charset) { m_charset = charset.isolatedCopy(); }
     void setCrossOriginModeAllowsCookies(bool allowsCookies) { m_crossOriginModeAllowsCookies = allowsCookies; }
     CachedResource::Type resourceType() const { return m_resourceType; }
 
 private:
-    PreloadRequest(const String& initiator, const String& resourceURL, const KURL& baseURL, CachedResource::Type resourceType)
+    PreloadRequest(const String& initiator, const String& resourceURL, const KURL& baseURL, CachedResource::Type resourceType, const String& mediaAttribute)
         : m_initiator(initiator)
         , m_resourceURL(resourceURL.isolatedCopy())
         , m_baseURL(baseURL.copy())
         , m_resourceType(resourceType)
+        , m_mediaAttribute(mediaAttribute.isolatedCopy())
         , m_crossOriginModeAllowsCookies(false)
     {
     }
 
     KURL completeURL(Document*);
 
     String m_initiator;
     String m_resourceURL;
     KURL m_baseURL;
     String m_charset;
     CachedResource::Type m_resourceType;
+    String m_mediaAttribute;
     bool m_crossOriginModeAllowsCookies;
 };
 
 typedef Vector<OwnPtr<PreloadRequest> > PreloadRequestStream;
 
 class HTMLResourcePreloader {
     WTF_MAKE_NONCOPYABLE(HTMLResourcePreloader); WTF_MAKE_FAST_ALLOCATED;
 public:
     explicit HTMLResourcePreloader(Document* document)
         : m_document(document)
         , m_weakFactory(this)
     {
     }
 
     void takeAndPreload(PreloadRequestStream&);
     void preload(PassOwnPtr<PreloadRequest>);
 
     WeakPtr<HTMLResourcePreloader> createWeakPtr() { return m_weakFactory.createWeakPtr(); }
 
 private:
     Document* m_document;
     WeakPtrFactory<HTMLResourcePreloader> m_weakFactory;
 };
 
 }
 
 #endif