Revert of Remove uses of deprecated toWebCoreStringWithUndefinedOrNullCheck(v8::Handle<v8::Value>)

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 186 matching lines @@
 
     // FIXME: See the above comment.
     inline String toWebCoreStringWithNullCheck(v8::Handle<v8::Value> value)
     {
         V8StringResource<WithNullCheck> stringResource(value);
         if (!stringResource.prepare())
             return String();
         return stringResource;
     }
 
+    // FIXME: See the above comment.
+    inline String toWebCoreStringWithUndefinedOrNullCheck(v8::Handle<v8::Value> value)
+    {
+        V8StringResource<WithUndefinedOrNullCheck> stringResource(value);
+        if (!stringResource.prepare())
+            return String();
+        return stringResource;
+    }
+
     // Convert a string to a V8 string.
     // Return a V8 external string that shares the underlying buffer with the given
     // WebCore string. The reference counting mechanism is used to keep the
     // underlying buffer alive while the string is still live in the V8 engine.
     inline v8::Handle<v8::String> v8String(v8::Isolate* isolate, const String& string)
     {
         if (string.isNull())
             return v8::String::Empty(isolate);
         return V8PerIsolateData::from(isolate)->stringCache()->v8ExternalString(string.impl(), isolate);
     }
@@ skipping 488 matching lines @@
 
     // Converts a DOM object to a v8 value.
     // This is a no-inline version of toV8(). If you want to call toV8()
     // without creating #include cycles, you can use this function instead.
     // Each specialized implementation will be generated.
     template<typename T>
     v8::Handle<v8::Value> toV8NoInline(T* impl, v8::Handle<v8::Object> creationContext, v8::Isolate*);
 } // namespace WebCore
 
 #endif // V8Binding_h