This is a cleaned up fix of Christian's original patch in ...

webkit/port/bindings/v8/v8_index.h

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_INDEX_H__
 #define V8_INDEX_H__
 
 #include <v8.h>
 #include "PlatformString.h"  // for WebCore::String
 
@@ skipping 425 matching lines @@
 
 class V8ClassIndex {
  public:
   // Type must start at non-negative numbers. See ToInt, FromInt.
   enum V8WrapperType {
     INVALID_CLASS_INDEX = 0,
 #define DEFINE_ENUM(name, type) name,
     ALL_WRAPPER_TYPES(DEFINE_ENUM)
 #undef DEFINE_ENUM
     CLASSINDEX_END,
+    WRAPPER_TYPE_COUNT = CLASSINDEX_END
   };
 
   static int ToInt(V8WrapperType type) { return static_cast<int>(type); }
 
   static V8WrapperType FromInt(int v) {
     ASSERT(INVALID_CLASS_INDEX <= v && v < CLASSINDEX_END);
     return static_cast<V8WrapperType>(v);
   }
 
   static FunctionTemplateFactory GetFactory(V8WrapperType type);
   // Returns a field to be used as cache for the template for the given type
   static v8::Persistent<v8::FunctionTemplate>* GetCache(V8WrapperType type);
 };
 
 }
 
 #endif  // V8_INDEX_H__