diff -r 000000000000 -r 4f2f89ce4247 WebKit/win/WebKitCOMAPI.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebKit/win/WebKitCOMAPI.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2009 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.
+ */
+
+#include "config.h"
+#include "WebKitCOMAPI.h"
+
+#include "WebKit.h"
+#include "WebKitDLL.h"
+
+#include <WebCore/COMPtr.h>
+
+struct CLSIDHash {
+    static unsigned hash(const CLSID& clsid)
+    {
+        RPC_STATUS status;
+        return ::UuidHash(const_cast<CLSID*>(&clsid), &status);
+    }
+    static bool equal(const CLSID& a, const CLSID& b) { return ::IsEqualCLSID(a, b); }
+    static const bool safeToCompareToEmptyOrDeleted = true;
+};
+
+struct CLSIDHashTraits : WTF::GenericHashTraits<CLSID> {
+    static void constructDeletedValue(CLSID& slot) { slot = CLSID_NULL; }
+    static bool isDeletedValue(const CLSID& value) { return value == CLSID_NULL; }
+};
+
+static COMPtr<IClassFactory> classFactory(const CLSID& clsid)
+{
+    typedef HashMap<CLSID, COMPtr<IClassFactory>, CLSIDHash, CLSIDHashTraits> FactoryMap;
+    static FactoryMap& factories = *new FactoryMap;
+
+    pair<FactoryMap::iterator, bool> result = factories.add(clsid, 0);
+    COMPtr<IClassFactory>& factory = result.first->second;
+    bool added = result.second;
+    if (added && FAILED(DllGetClassObject(clsid, __uuidof(factory), reinterpret_cast<void**>(&factory))))
+        factory = 0;
+
+    return factory;
+}
+
+HRESULT WebKitCreateInstance(REFCLSID rclsid, IUnknown* pUnkOuter, REFIID riid, void** ppvObject)
+{
+    COMPtr<IClassFactory> factory = classFactory(rclsid);
+    if (!factory)
+        return REGDB_E_CLASSNOTREG;
+
+    return factory->CreateInstance(pUnkOuter, riid, ppvObject);
+}