Generate simple code for "trivial" conversions

Source/bindings/tests/results/core/V8TestInterfaceConstructor4.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 "V8TestInterfaceConstructor4.h"
 
 #include "bindings/core/v8/ExceptionState.h"
@@ skipping 19 matching lines @@
 const WrapperTypeInfo& TestInterfaceConstructor4::s_wrapperTypeInfo = V8TestInterfaceConstructor4::wrapperTypeInfo;
 
 namespace TestInterfaceConstructor4V8Internal {
 
 template <typename T> void V8_USE(T) { }
 
 static void constructor1(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TestInterfaceConstructor4* testInterface4Arg;
     {
-        v8::TryCatch block;
-        V8RethrowTryCatchScope rethrow(block);
-        TONATIVE_VOID_INTERNAL(testInterface4Arg, V8TestInterfaceConstructor4::toImplWithTypeCheck(info.GetIsolate(), info[0]));
+        testInterface4Arg = V8TestInterfaceConstructor4::toImplWithTypeCheck(info.GetIsolate(), info[0]);
     }
     RefPtr<TestInterfaceConstructor4> impl = TestInterfaceConstructor4::create(testInterface4Arg);
     v8::Handle<v8::Object> wrapper = info.Holder();
     impl->associateWithWrapper(&V8TestInterfaceConstructor4::wrapperTypeInfo, wrapper, info.GetIsolate());
     v8SetReturnValue(info, wrapper);
 }
 
 static void constructor2(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     ExceptionState exceptionState(ExceptionState::ConstructionContext, "TestInterfaceConstructor4", info.Holder(), info.GetIsolate());
@@ skipping 104 matching lines @@
     return 0;
 }
 
 template<>
 v8::Handle<v8::Value> toV8NoInline(TestInterfaceConstructor4* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return toV8(impl, creationContext, isolate);
 }
 
 } // namespace blink