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diff --git a/Source/WebCore/platform/SchemeRegistry.h b/Source/WebCore/platform/SchemeRegistry.h
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+/*
+ * Copyright (C) 2010 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, 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 SchemeRegistry_h
+#define SchemeRegistry_h
+
+#include "PlatformString.h"
+#include <wtf/HashSet.h>
+#include <wtf/text/StringHash.h>
+
+namespace WebCore {
+
+typedef HashSet<String, CaseFoldingHash> URLSchemesMap;
+
+class SchemeRegistry {
+public:
+    static void registerURLSchemeAsLocal(const String&);
+    static void removeURLSchemeRegisteredAsLocal(const String&);
+    static const URLSchemesMap& localURLSchemes();
+
+    static bool shouldTreatURLAsLocal(const String&);
+    static bool shouldTreatURLSchemeAsLocal(const String&);
+
+    // Secure schemes do not trigger mixed content warnings. For example,
+    // https and data are secure schemes because they cannot be corrupted by
+    // active network attackers.
+    static void registerURLSchemeAsSecure(const String&);
+    static bool shouldTreatURLSchemeAsSecure(const String&);
+
+    static void registerURLSchemeAsNoAccess(const String&);
+    static bool shouldTreatURLSchemeAsNoAccess(const String&);
+    
+    static void registerURLSchemeAsEmptyDocument(const String&);
+    static bool shouldLoadURLSchemeAsEmptyDocument(const String&);
+};
+
+} // namespace WebCore
+
+#endif // SchemeRegistry_h