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diff --git a/WebCore/platform/KURL.h b/WebCore/platform/KURL.h
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+++ b/WebCore/platform/KURL.h
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+/*
+ * Copyright (C) 2003, 2004, 2005, 2006, 2007, 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 KURL_h
+#define KURL_h
+
+#include "PlatformString.h"
+
+#if PLATFORM(CF)
+typedef const struct __CFURL* CFURLRef;
+#endif
+
+#if PLATFORM(MAC)
+#ifdef __OBJC__
+@class NSURL;
+#else
+class NSURL;
+#endif
+#endif
+
+#if PLATFORM(QT)
+QT_BEGIN_NAMESPACE
+class QUrl;
+QT_END_NAMESPACE
+#endif
+
+namespace WebCore {
+
+class TextEncoding;
+struct KURLHash;
+
+// FIXME: Our terminology here is a bit inconsistent. We refer to the part
+// after the "#" as the "fragment" in some places and the "ref" in others.
+// We should fix the terminology to match the URL and URI RFCs as closely
+// as possible to resolve this.
+
+class KURL {
+public:
+    // Generates a URL which contains a null string.
+    KURL() { invalidate(); }
+
+    // The argument is an absolute URL string. The string is assumed to be
+    // already encoded.
+    // FIXME: This constructor has a special case for strings that start with
+    // "/", prepending "file://" to such strings; it would be good to get
+    // rid of that special case.
+    explicit KURL(const char*);
+
+    // The argument is an absolute URL string. The string is assumed to be
+    // already encoded.
+    // FIXME: For characters with codes other than 0000-00FF will be chopped
+    // off, so this call is currently not safe to use with arbitrary strings.
+    // FIXME: This constructor has a special case for strings that start with
+    // "/", prepending "file://" to such strings; it would be good to get
+    // rid of that special case.
+    explicit KURL(const String&);
+
+    // Resolves the relative URL with the given base URL. If provided, the
+    // TextEncoding is used to encode non-ASCII characers. The base URL can be
+    // null or empty, in which case the relative URL will be interpreted as
+    // absolute.
+    // FIXME: If the base URL is invalid, this always creates an invalid
+    // URL. Instead I think it would be better to treat all invalid base URLs
+    // the same way we treate null and empty base URLs.
+    KURL(const KURL& base, const String& relative);
+    KURL(const KURL& base, const String& relative, const TextEncoding&);
+
+    // FIXME: The above functions should be harmonized so that passing a
+    // base of null or the empty string gives the same result as the
+    // standard String constructor.
+
+    bool isNull() const { return m_string.isNull(); }
+    bool isEmpty() const { return m_string.isEmpty(); }
+
+    bool isValid() const { return m_isValid; }
+
+    // Returns true if this URL has a path. Note that "http://foo.com/" has a
+    // path of "/", so this function will return true. Only invalid or
+    // non-hierarchical (like "javascript:") URLs will have no path.
+    bool hasPath() const;
+
+    const String& string() const { return m_string; }
+
+    String protocol() const;
+    String host() const;
+    unsigned short port() const;
+    String user() const;
+    String pass() const;
+    String path() const;
+    String lastPathComponent() const;
+    String query() const; // Includes the "?".
+    String ref() const; // Does *not* include the "#".
+    bool hasRef() const;
+
+    String prettyURL() const;
+    String fileSystemPath() const;
+
+    // Returns true if the current URL's protocol is the same as the null-
+    // terminated ASCII argument. The argument must be lower-case.
+    bool protocolIs(const char*) const;
+    bool isLocalFile() const;
+
+    void setProtocol(const String&);
+    void setHost(const String&);
+
+    // Setting the port to 0 will clear any port from the URL.
+    void setPort(unsigned short);
+
+    // Input is like "foo.com" or "foo.com:8000".
+    void setHostAndPort(const String&);
+
+    void setUser(const String&);
+    void setPass(const String&);
+
+    // If you pass an empty path for HTTP or HTTPS URLs, the resulting path
+    // will be "/".
+    void setPath(const String&);
+
+    // The query may begin with a question mark, or, if not, one will be added
+    // for you. Setting the query to the empty string will leave a "?" in the
+    // URL (with nothing after it). To clear the query, pass a null string.
+    void setQuery(const String&);
+
+    void setRef(const String&);
+    void removeRef();
+    
+    friend bool equalIgnoringRef(const KURL&, const KURL&);
+
+    friend bool protocolHostAndPortAreEqual(const KURL&, const KURL&);
+    
+    operator const String&() const { return m_string; }
+    operator JSC::UString() const { return m_string; }
+
+    unsigned hostStart() const { return (m_passwordEnd == m_userStart) ? m_passwordEnd : m_passwordEnd + 1; }
+    unsigned hostEnd() const { return m_hostEnd; }
+    
+    unsigned pathStart() const { return m_portEnd; }
+    unsigned pathEnd() const { return m_pathEnd; }
+    unsigned pathAfterLastSlash() const { return m_pathAfterLastSlash; }
+
+#if PLATFORM(CF)
+    KURL(CFURLRef);
+    CFURLRef createCFURL() const;
+#endif
+
+#if PLATFORM(MAC)
+    KURL(NSURL*);
+    operator NSURL*() const;
+#endif
+#ifdef __OBJC__
+    operator NSString*() const { return m_string; }
+#endif
+
+#if PLATFORM(QT)
+    KURL(const QUrl&);
+    operator QUrl() const;
+#endif
+
+#ifndef NDEBUG
+    void print() const;
+#endif
+
+private:
+    void invalidate();
+    bool isHierarchical() const;
+    void init(const KURL&, const String&, const TextEncoding&);
+    static bool protocolIs(const String&, const char*);
+    void copyToBuffer(Vector<char, 512>& buffer) const;
+    
+    // Parses the given URL. The originalString parameter allows for an
+    // optimization: When the source is the same as the fixed-up string,
+    // it will use the passed-in string instead of allocating a new one.
+    void parse(const String&);
+    void parse(const char* url, const String* originalString);
+
+    String m_string;
+    bool m_isValid;
+    int m_schemeEnd;
+    int m_userStart;
+    int m_userEnd;
+    int m_passwordEnd;
+    int m_hostEnd;
+    int m_portEnd;
+    int m_pathAfterLastSlash;
+    int m_pathEnd;
+    int m_queryEnd;
+    int m_fragmentEnd;
+};
+
+bool operator==(const KURL&, const KURL&);
+bool operator==(const KURL&, const String&);
+bool operator==(const String&, const KURL&);
+bool operator!=(const KURL&, const KURL&);
+bool operator!=(const KURL&, const String&);
+bool operator!=(const String&, const KURL&);
+
+bool equalIgnoringRef(const KURL&, const KURL&);
+bool protocolHostAndPortAreEqual(const KURL&, const KURL&);
+    
+const KURL& blankURL();
+
+// Functions to do URL operations on strings.
+// These are operations that aren't faster on a parsed URL.
+
+bool protocolIs(const String& url, const char* protocol);
+
+String mimeTypeFromDataURL(const String& url);
+
+// Unescapes the given string using URL escaping rules, given an optional
+// encoding (defaulting to UTF-8 otherwise). DANGER: If the URL has "%00"
+// in it, the resulting string will have embedded null characters!
+String decodeURLEscapeSequences(const String&);
+String decodeURLEscapeSequences(const String&, const TextEncoding&);
+
+String encodeWithURLEscapeSequences(const String&);
+
+// Inlines.
+
+inline bool operator==(const KURL& a, const KURL& b)
+{
+    return a.string() == b.string();
+}
+
+inline bool operator==(const KURL& a, const String& b)
+{
+    return a.string() == b;
+}
+
+inline bool operator==(const String& a, const KURL& b)
+{
+    return a == b.string();
+}
+
+inline bool operator!=(const KURL& a, const KURL& b)
+{
+    return a.string() != b.string();
+}
+
+inline bool operator!=(const KURL& a, const String& b)
+{
+    return a.string() != b;
+}
+
+inline bool operator!=(const String& a, const KURL& b)
+{
+    return a != b.string();
+}
+
+} // namespace WebCore
+
+namespace WTF {
+
+    // KURLHash is the default hash for String
+    template<typename T> struct DefaultHash;
+    template<> struct DefaultHash<WebCore::KURL> {
+        typedef WebCore::KURLHash Hash;
+    };
+
+} // namespace WTF
+
+#endif // KURL_h