Create fewer local v8::TryCatch objects in generated bindings code

Source/bindings/tests/results/V8TestInterfaceConstructor3.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 "V8TestInterfaceConstructor3.h"
 
 #include "RuntimeEnabledFeatures.h"
@@ skipping 32 matching lines @@
 
 template <typename T> void V8_USE(T) { }
 
 static void constructor(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     v8::Isolate* isolate = info.GetIsolate();
     if (UNLIKELY(info.Length() < 1)) {
         throwMinimumArityTypeErrorForConstructor("TestInterfaceConstructor3", 1, info.Length(), info.GetIsolate());
         return;
     }
-    TOSTRING_VOID(V8StringResource<>, stringArg, info[0]);
+    V8StringResource<> stringArg;
+    {
+        TOSTRING_VOID_INTERNAL(stringArg, info[0]);
+    }
     RefPtr<TestInterfaceConstructor3> impl = TestInterfaceConstructor3::create(stringArg);
 
     v8::Handle<v8::Object> wrapper = info.Holder();
     V8DOMWrapper::associateObjectWithWrapper<V8TestInterfaceConstructor3>(impl.release(), &V8TestInterfaceConstructor3::wrapperTypeInfo, wrapper, isolate, WrapperConfiguration::Independent);
     v8SetReturnValue(info, wrapper);
 }
 
 } // namespace TestInterfaceConstructor3V8Internal
 
 void V8TestInterfaceConstructor3::constructorCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
@@ skipping 85 matching lines @@
     fromInternalPointer(object)->deref();
 }
 
 template<>
 v8::Handle<v8::Value> toV8NoInline(TestInterfaceConstructor3* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     return toV8(impl, creationContext, isolate);
 }
 
 } // namespace WebCore