Add a native subtype of function that uses the native C++ class hierarchy to check if an element

Source/bindings/dart/DartUtilities.h

 // Copyright 2011, Google 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:
 //
 //    * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //    * Redistributions in binary form must reproduce the above
@@ skipping 12 matching lines @@
 // 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 DartUtilities_h
 #define DartUtilities_h
 
-
 #include "DartWebkitClassIds.h"
 
 #include "bindings/dart/DartDOMData.h"
 #include "bindings/dart/DartStringCache.h"
 #include "bindings/v8/V8RecursionScope.h"
 #include "core/dom/DOMStringList.h"
 #include "core/dom/MessagePort.h"
 #include "modules/mediastream/MediaStreamTrack.h"
 
 #include <dart_api.h>
@@ skipping 426 matching lines @@
         return dartToScriptValueWithNullCheck(object, exception);
     }
     static Dart_Handle scriptValueToDart(const ScriptValue& value);
 
     static PassRefPtr<SerializedScriptValue> dartToSerializedScriptValue(Dart_Handle, Dart_Handle& exception);
     static Dart_Handle serializedScriptValueToDart(PassRefPtr<SerializedScriptValue>);
 
     static Dart_Handle dateToDart(double);
     static double dartToDate(Dart_Handle, Dart_Handle&);
     static double dartToDate(Dart_NativeArguments args, int idx, Dart_Handle&);
-    static bool isHtmlElement(DartDOMData*, Dart_Handle);
     static bool isDateTime(DartDOMData*, Dart_Handle);
     static bool isBlob(DartDOMData*, Dart_Handle);
     static bool isImageData(DartDOMData*, Dart_Handle);
     static bool isIDBKeyRange(DartDOMData*, Dart_Handle);
     static bool isTypeSubclassOf(Dart_Handle type, intptr_t libraryId, const char* typeName);
     static bool isTypeSubclassOfTag(Dart_Handle type, const String& tagName);
     static bool objectIsType(Dart_Handle, Dart_Handle type);
 
     static bool isTypedData(Dart_Handle);
 
@@ skipping 160 matching lines @@
     }
 };
 
 
 #define DART_UNIMPLEMENTED_EXCEPTION() DartUtilities::notImplementedException(__FILE__, __LINE__)
 #define DART_UNIMPLEMENTED() Dart_ThrowException(DART_UNIMPLEMENTED_EXCEPTION());
 
 } // namespace WebCore
 
 #endif // DartUtilities_h