Canvas2D Performance: fix the bottleneck of hasInstance during JS binding -- overloading

Source/bindings/tests/results/core/V8TestInterfaceConstructor2.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file has been auto-generated by code_generator_v8.py. DO NOT MODIFY!
 
 #include "config.h"
 #include "V8TestInterfaceConstructor2.h"
 
 #include "bindings/core/v8/Dictionary.h"
@@ skipping 67 matching lines @@
 static void constructor4(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     ExceptionState exceptionState(ExceptionState::ConstructionContext, "TestInterfaceConstructor2", info.Holder(), info.GetIsolate());
     TestInterfaceEmpty* testInterfaceEmptyArg;
     int longArg;
     V8StringResource<> defaultUndefinedOptionalStringArg;
     V8StringResource<> defaultNullStringOptionalStringArg;
     Dictionary defaultUndefinedOptionalDictionaryArg;
     V8StringResource<> optionalStringArg;
     {
-        testInterfaceEmptyArg = V8TestInterfaceEmpty::toImplWithTypeCheck(info.GetIsolate(), info[0]);
+        testInterfaceEmptyArg = V8TestInterfaceEmpty::toImpl(v8::Handle<v8::Object>::Cast(info[0]));
         TONATIVE_VOID_EXCEPTIONSTATE_INTERNAL(longArg, toInt32(info[1], exceptionState), exceptionState);
         TOSTRING_VOID_INTERNAL(defaultUndefinedOptionalStringArg, info[2]);
         if (!info[3]->IsUndefined()) {
             TOSTRING_VOID_INTERNAL(defaultNullStringOptionalStringArg, info[3]);
         } else {
             defaultNullStringOptionalStringArg = nullptr;
         }
         if (!isUndefinedOrNull(info[4]) && !info[4]->IsObject()) {
             exceptionState.throwTypeError("parameter 5 ('defaultUndefinedOptionalDictionaryArg') is not an object.");
             exceptionState.throwIfNeeded();
@@ skipping 146 matching lines @@
     return 0;
 }
 
 template<>
 v8::Handle<v8::Value> toV8NoInline(TestInterfaceConstructor2* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return toV8(impl, creationContext, isolate);
 }
 
 } // namespace blink