HTMLCanvasElement.toDataURL should use IDL 'any' to avoid using custom binding.

Source/bindings/core/v8/custom/V8HTMLCanvasElementCustom.cpp

-/*
- * Copyright (C) 2007-2009 Google Inc. All rights reserved.
- * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
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-
-#include "config.h"
-#include "bindings/core/v8/V8HTMLCanvasElement.h"
-
-#include "bindings/core/v8/ExceptionState.h"
-#include "bindings/core/v8/V8Binding.h"
-#include "bindings/core/v8/V8Node.h"
-#include "core/html/HTMLCanvasElement.h"
-#include "wtf/MathExtras.h"
-#include "wtf/text/WTFString.h"
-
-namespace blink {
-
-void V8HTMLCanvasElement::toDataURLMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
-{
-    v8::Handle<v8::Object> holder = info.Holder();
-    HTMLCanvasElement* canvas = V8HTMLCanvasElement::toImpl(holder);
-    ExceptionState exceptionState(ExceptionState::ExecutionContext, "toDataURL", "HTMLCanvasElement", info.Holder(), info.GetIsolate());
-
-    TOSTRING_VOID(V8StringResource<>, type, info[0]);
-    double quality;
-    double* qualityPtr = 0;
-    if (info.Length() > 1 && info[1]->IsNumber()) {
-        quality = info[1]->NumberValue();
-        qualityPtr = &quality;
-    }
-
-    String result = canvas->toDataURL(type, qualityPtr, exceptionState);
-    exceptionState.throwIfNeeded();
-    v8SetReturnValueStringOrUndefined(info, result, info.GetIsolate());
-}
-
-} // namespace blink