Fix Document leak from NodeFilter.

Source/bindings/v8/V8Binding.h

 /*
 * Copyright (C) 2009 Google Inc. All rights reserved.
 * Copyright (C) 2012 Ericsson AB. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
@@ skipping 30 matching lines @@
 #include "wtf/MathExtras.h"
 #include "wtf/text/AtomicString.h"
 #include <v8.h>
 
 namespace WebCore {
 
     class DOMStringList;
     class DOMWindow;
     class Document;
     class Frame;
-    class NodeFilter;
     class ScriptExecutionContext;
     class ScriptWrappable;
     class XPathNSResolver;
 
     const int kMaxRecursionDepth = 22;
 
     // Schedule a DOM exception to be thrown, if the exception code is different
     // from zero.
     v8::Handle<v8::Value> setDOMException(int, v8::Isolate*);
     v8::Handle<v8::Value> setDOMException(int, const String&, v8::Isolate*);
@@ skipping 443 matching lines @@
             throwTypeError(isolate);
             return v8Undefined();
         }
 
         V8TRYCATCH(uint32_t, sequenceLength, lengthValue->Int32Value());
         length = sequenceLength;
 
         return v8Value;
     }
 
-    PassRefPtr<NodeFilter> toNodeFilter(v8::Handle<v8::Value>);
-
     inline bool isUndefinedOrNull(v8::Handle<v8::Value> value)
     {
         return value->IsNull() || value->IsUndefined();
     }
 
     // Returns true if the provided object is to be considered a 'host object', as used in the
     // HTML5 structured clone algorithm.
     inline bool isHostObject(v8::Handle<v8::Object> object)
     {
         // If the object has any internal fields, then we won't be able to serialize or deserialize
@@ skipping 94 matching lines @@
     inline v8::Local<v8::Function> createClosure(v8::FunctionCallback function, v8::Handle<v8::Value> environment)
     {
         return v8::FunctionTemplate::New(function, environment)->GetFunction();
     }
 
     v8::Local<v8::Value> getHiddenValueFromMainWorldWrapper(v8::Isolate*, ScriptWrappable*, v8::Handle<v8::String> key);
 
 } // namespace WebCore
 
 #endif // V8Binding_h