diff -r 000000000000 -r 4f2f89ce4247 WebCore/loader/CrossOriginPreflightResultCache.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/loader/CrossOriginPreflightResultCache.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2008 Apple 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
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ *
+ */
+
+#ifndef CrossOriginPreflightResultCache_h
+#define CrossOriginPreflightResultCache_h
+
+#include "KURLHash.h"
+#include "StringHash.h"
+#include <wtf/HashMap.h>
+#include <wtf/HashSet.h>
+#include <wtf/PassOwnPtr.h>
+
+namespace WebCore {
+
+    class HTTPHeaderMap;
+    class ResourceResponse;
+
+    class CrossOriginPreflightResultCacheItem : public Noncopyable {
+    public:
+        CrossOriginPreflightResultCacheItem(bool credentials)
+            : m_absoluteExpiryTime(0)
+            , m_credentials(credentials)
+        {
+        }
+
+        bool parse(const ResourceResponse&, String& errorDescription);
+        bool allowsCrossOriginMethod(const String&, String& errorDescription) const;
+        bool allowsCrossOriginHeaders(const HTTPHeaderMap&, String& errorDescription) const;
+        bool allowsRequest(bool includeCredentials, const String& method, const HTTPHeaderMap& requestHeaders) const;
+
+    private:
+        typedef HashSet<String, CaseFoldingHash> HeadersSet;
+
+        // FIXME: A better solution to holding onto the absolute expiration time might be
+        // to start a timer for the expiration delta that removes this from the cache when
+        // it fires.
+        double m_absoluteExpiryTime;
+        bool m_credentials;
+        HashSet<String> m_methods;
+        HeadersSet m_headers;
+    };
+
+    class CrossOriginPreflightResultCache : public Noncopyable {
+    public:
+        static CrossOriginPreflightResultCache& shared();
+
+        void appendEntry(const String& origin, const KURL&, PassOwnPtr<CrossOriginPreflightResultCacheItem>);
+        bool canSkipPreflight(const String& origin, const KURL&, bool includeCredentials, const String& method, const HTTPHeaderMap& requestHeaders);
+
+        void empty();
+
+    private:
+        CrossOriginPreflightResultCache() { }
+
+        typedef HashMap<std::pair<String, KURL>, CrossOriginPreflightResultCacheItem*> CrossOriginPreflightResultHashMap;
+
+        CrossOriginPreflightResultHashMap m_preflightHashMap;
+    };
+
+} // namespace WebCore
+
+#endif