Lower priority of async scripts

Source/core/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 28 matching lines @@
     {
         return adoptPtr(new PreloadRequest(initiatorName, initiatorPosition, resourceURL, baseURL, resourceType));
     }
 
     bool isSafeToSendToAnotherThread() const;
 
     FetchRequest resourceRequest(Document*);
 
     const String& charset() const { return m_charset; }
     double discoveryTime() const { return m_discoveryTime; }
+    FetchRequest::DeferOption defer() const { return m_defer; }
+    void setDefer(FetchRequest::DeferOption defer) { m_defer = defer; }
     void setCharset(const String& charset) { m_charset = charset.isolatedCopy(); }
     void setCrossOriginEnabled(StoredCredentials allowCredentials)
     {
         m_isCORSEnabled = true;
         m_allowCredentials = allowCredentials;
     }
 
     Resource::Type resourceType() const { return m_resourceType; }
 
 private:
     PreloadRequest(const String& initiatorName, const TextPosition& initiatorPosition, const String& resourceURL, const KURL& baseURL, Resource::Type resourceType)
         : m_initiatorName(initiatorName)
         , m_initiatorPosition(initiatorPosition)
         , m_resourceURL(resourceURL.isolatedCopy())
         , m_baseURL(baseURL.copy())
         , m_resourceType(resourceType)
         , m_isCORSEnabled(false)
         , m_allowCredentials(DoNotAllowStoredCredentials)
         , m_discoveryTime(monotonicallyIncreasingTime())
+        , m_defer(FetchRequest::NoDefer)
     {
     }
 
     KURL completeURL(Document*);
 
     String m_initiatorName;
     TextPosition m_initiatorPosition;
     String m_resourceURL;
     KURL m_baseURL;
     String m_charset;
     Resource::Type m_resourceType;
     bool m_isCORSEnabled;
     StoredCredentials m_allowCredentials;
     double m_discoveryTime;
+    FetchRequest::DeferOption m_defer;
 };
 
 typedef Vector<OwnPtr<PreloadRequest> > PreloadRequestStream;
 
 class HTMLResourcePreloader FINAL : public NoBaseWillBeGarbageCollected<HTMLResourcePreloader> {
     WTF_MAKE_NONCOPYABLE(HTMLResourcePreloader); WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
 public:
     static PassOwnPtrWillBeRawPtr<HTMLResourcePreloader> create(Document&);
     void trace(Visitor*);
 
     void takeAndPreload(PreloadRequestStream&);
     void preload(PassOwnPtr<PreloadRequest>);
 
 private:
     explicit HTMLResourcePreloader(Document&);
 
     RawPtrWillBeMember<Document> m_document;
 };
 
 }
 
 #endif