Rename Sky's custom2 to custom

sky/engine/core/dom/custom2/new_custom_element_registry.cc

Index: sky/engine/core/dom/custom2/new_custom_element_registry.cc
diff --git a/sky/engine/core/dom/custom2/new_custom_element_registry.cc b/sky/engine/core/dom/custom2/new_custom_element_registry.cc
deleted file mode 100644
index 171d0203f7f045d95e89db2e313a826b38c3390d..0000000000000000000000000000000000000000
--- a/sky/engine/core/dom/custom2/new_custom_element_registry.cc
+++ /dev/null
@@ -1,48 +0,0 @@
-// 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/Element.h"
-#include "sky/engine/core/html/HTMLElement.h"
-
-namespace blink {
-
-NewCustomElementRegistry::NewCustomElementRegistry() {
-}
-
-NewCustomElementRegistry::~NewCustomElementRegistry() {
-}
-
-void NewCustomElementRegistry::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(
-    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