Use union types for HTMLSelectElement.add()'s arguments

Source/bindings/core/v8/custom/V8HTMLOptionsCollectionCustom.cpp

 /*
  * Copyright (C) 2009 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 25 matching lines @@
 #include "bindings/core/v8/V8HTMLOptionElement.h"
 #include "bindings/core/v8/V8Node.h"
 #include "bindings/core/v8/V8NodeList.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/html/HTMLOptionElement.h"
 #include "core/html/HTMLOptionsCollection.h"
 #include "core/html/HTMLSelectElement.h"
 
 namespace blink {
 
-void V8HTMLOptionsCollection::addMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
-{
-    ExceptionState exceptionState(ExceptionState::ExecutionContext, "add", "HTMLOptionsCollection", info.Holder(), info.GetIsolate());
-    if (!V8HTMLOptionElement::hasInstance(info[0], info.GetIsolate())) {
-        exceptionState.throwTypeError("The element provided was not an HTMLOptionElement.");
-    } else {
-        HTMLOptionsCollection* impl = V8HTMLOptionsCollection::toImpl(info.Holder());
-        HTMLOptionElement* option = V8HTMLOptionElement::toImpl(v8::Handle<v8::Object>(v8::Handle<v8::Object>::Cast(info[0])));
-
-        if (info.Length() < 2) {
-            impl->add(option, exceptionState);
-        } else {
-            int index = toInt32(info[1], exceptionState);
-            if (exceptionState.throwIfNeeded())
-                return;
-
-            impl->add(option, index, exceptionState);
-        }
-    }
-
-    exceptionState.throwIfNeeded();
-}
-
 void V8HTMLOptionsCollection::lengthAttributeSetterCustom(v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<void>& info)
 {
     HTMLOptionsCollection* impl = V8HTMLOptionsCollection::toImpl(info.Holder());
     double v = value->NumberValue();
     unsigned newLength = 0;
     ExceptionState exceptionState(ExceptionState::SetterContext, "length", "HTMLOptionsCollection", info.Holder(), info.GetIsolate());
     if (!std::isnan(v) && !std::isinf(v)) {
         if (v < 0.0)
             exceptionState.throwDOMException(IndexSizeError, "The value provided (" + String::number(v) + ") is negative. Lengths must be greater than or equal to 0.");
         else if (v > static_cast<double>(UINT_MAX))
             newLength = UINT_MAX;
         else
             newLength = static_cast<unsigned>(v);
     }
 
     if (exceptionState.throwIfNeeded())
         return;
 
     impl->setLength(newLength, exceptionState);
 }
 
 } // namespace blink