Rename Sky's custom2 to custom

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

Index: sky/engine/core/dom/custom2/new_custom_element_registry.h
diff --git a/sky/engine/core/dom/custom2/new_custom_element_registry.h b/sky/engine/core/dom/custom2/new_custom_element_registry.h
deleted file mode 100644
index b117e4a2ce9fee7b5eb8d43c174f72624aa796b8..0000000000000000000000000000000000000000
--- a/sky/engine/core/dom/custom2/new_custom_element_registry.h
+++ /dev/null
@@ -1,46 +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.
-
-#ifndef SKY_ENGINE_CORE_DOM_CUSTOM2_NEW_CUSTOM_ELEMENT_REGISTRY_H_
-#define SKY_ENGINE_CORE_DOM_CUSTOM2_NEW_CUSTOM_ELEMENT_REGISTRY_H_
-
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "sky/engine/core/dom/Element.h"
-#include "sky/engine/tonic/dart_state.h"
-#include "sky/engine/tonic/dart_value.h"
-#include "sky/engine/wtf/HashMap.h"
-#include "sky/engine/wtf/PassRefPtr.h"
-#include "sky/engine/wtf/RefCounted.h"
-#include "sky/engine/wtf/RefPtr.h"
-#include "sky/engine/wtf/text/AtomicString.h"
-
-namespace blink {
-class Document;
-
-class NewCustomElementRegistry : public RefCounted<NewCustomElementRegistry> {
- public:
-  static PassRefPtr<NewCustomElementRegistry> Create() {
-    return adoptRef(new NewCustomElementRegistry());
-  }
-
-  ~NewCustomElementRegistry();
-
-  void RegisterElement(const AtomicString& name, PassRefPtr<DartValue> type);
-  PassRefPtr<Element> CreateElement(Document& document, const AtomicString& name);
-
-  const base::WeakPtr<DartState>& dart_state() const { return dart_state_; }
-
- private:
-  NewCustomElementRegistry();
-
-  base::WeakPtr<DartState> dart_state_;
-  HashMap<AtomicString, RefPtr<DartValue>> registrations_;
-
-  DISALLOW_COPY_AND_ASSIGN(NewCustomElementRegistry);
-};
-
-} // namespace blink
-
-#endif  // SKY_ENGINE_CORE_DOM_CUSTOM2_NEW_CUSTOM_ELEMENT_REGISTRY_H_