Delete sky/engine/core/dom/custom

sky/engine/core/dom/custom/CustomElementObserver.h

-/*
- * Copyright (C) 2013 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer
- *    in the documentation and/or other materials provided with the
- *    distribution.
- * 3. Neither the name of Google Inc. nor the names of its contributors
- *    may be used to endorse or promote products derived from this
- *    software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef SKY_ENGINE_CORE_DOM_CUSTOM_CUSTOMELEMENTOBSERVER_H_
-#define SKY_ENGINE_CORE_DOM_CUSTOM_CUSTOMELEMENTOBSERVER_H_
-
-#include "sky/engine/platform/heap/Handle.h"
-#include "sky/engine/wtf/HashMap.h"
-
-namespace blink {
-
-class Element;
-
-class CustomElementObserver {
-public:
-    virtual ~CustomElementObserver() { }
-
-    // API for CustomElement to kick off notifications
-
-    static void notifyElementDidFinishParsingChildren(Element*);
-    static void notifyElementWasDestroyed(Element*);
-
-protected:
-    CustomElementObserver() { }
-
-    void observe(Element*);
-    void unobserve(Element*);
-
-    virtual void elementDidFinishParsingChildren(Element*) = 0;
-    virtual void elementWasDestroyed(Element* element) { unobserve(element); }
-};
-
-}
-
-#endif  // SKY_ENGINE_CORE_DOM_CUSTOM_CUSTOMELEMENTOBSERVER_H_