Make DOMWrapperWorld::current() return a reference instead of a pointer

Source/bindings/templates/interface.h

 // 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}}. DO NOT MODIFY!
 
 #ifndef {{v8_class}}_h
 #define {{v8_class}}_h
 
 {% filter conditional(conditional_string) %}
@@ skipping 211 matching lines @@
     }
     if (DOMDataStore::setReturnValueFromWrapper<{{v8_class}}>(callbackInfo.GetReturnValue(), impl))
         return;
     v8::Handle<v8::Object> wrapper = wrap(impl, callbackInfo.Holder(), callbackInfo.GetIsolate());
     v8SetReturnValue(callbackInfo, wrapper);
 }
 
 template<typename CallbackInfo>
 inline void v8SetReturnValueForMainWorld(const CallbackInfo& callbackInfo, {{cpp_class}}* impl)
 {
-    ASSERT(DOMWrapperWorld::current(callbackInfo.GetIsolate())->isMainWorld());
+    ASSERT(DOMWrapperWorld::current(callbackInfo.GetIsolate()).isMainWorld());
     if (UNLIKELY(!impl)) {
         v8SetReturnValueNull(callbackInfo);
         return;
     }
     if (DOMDataStore::setReturnValueFromWrapperForMainWorld<{{v8_class}}>(callbackInfo.GetReturnValue(), impl))
         return;
     v8::Handle<v8::Value> wrapper = wrap(impl, callbackInfo.Holder(), callbackInfo.GetIsolate());
     v8SetReturnValue(callbackInfo, wrapper);
 }
 
@@ skipping 34 matching lines @@
     v8SetReturnValueFast(callbackInfo, impl.get(), wrappable);
 }
 
 {% if has_event_constructor %}
 bool initialize{{cpp_class}}({{cpp_class}}Init&, const Dictionary&, ExceptionState&, const v8::FunctionCallbackInfo<v8::Value>& info, const String& = "");
 
 {% endif %}
 }
 {% endfilter %}
 #endif // {{v8_class}}_h