Rename Sky's custom2 to custom

sky/engine/core/dom/custom/custom_element_registry.cc

 // Copyright 2015 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.
 
 #include "sky/engine/config.h"
-#include "sky/engine/core/dom/custom2/new_custom_element_registry.h"
+#include "sky/engine/core/dom/custom/custom_element_registry.h"
 
 #include "sky/engine/core/dom/Element.h"
 #include "sky/engine/core/html/HTMLElement.h"
 
 namespace blink {
 
-NewCustomElementRegistry::NewCustomElementRegistry() {
+CustomElementRegistry::CustomElementRegistry() {
 }
 
-NewCustomElementRegistry::~NewCustomElementRegistry() {
+CustomElementRegistry::~CustomElementRegistry() {
 }
 
-void NewCustomElementRegistry::RegisterElement(const AtomicString& name,
+void CustomElementRegistry::RegisterElement(const AtomicString& name,
                                                PassRefPtr<DartValue> type) {
   if (!dart_state_)
     dart_state_ = type->dart_state();
   DCHECK(dart_state_.get() == type->dart_state().get());
 
   auto result = registrations_.add(name, type);
   if (!result.isNewEntry) {
     // TODO(abarth): Handle the case of multiple registrations.
   }
 }
 
-PassRefPtr<Element> NewCustomElementRegistry::CreateElement(
+PassRefPtr<Element> CustomElementRegistry::CreateElement(
     Document& document, const AtomicString& name) {
   const auto& it = registrations_.find(name);
   if (it != registrations_.end()) {
     DartState::Scope scope(dart_state_.get());
     Dart_Handle type = it->value->dart_value();
     Dart_Handle wrapper = Dart_New(type, Dart_EmptyString(), 0, nullptr);
     if (!LogIfError(wrapper)) {
       RefPtr<Element> element = DartConverter<Element*>::FromDart(wrapper);
       DCHECK(element);
       DCHECK(element->isUpgradedCustomElement());
       return element.release();
     }
   }
   return HTMLElement::create(QualifiedName(name), document);
 }
 
 } // namespace blink