compositor-worker: plumb element id and mutable properties

third_party/WebKit/Source/core/dom/Element.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003-2011, 2013, 2014 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 512 matching lines @@
     bool hasAnimations() const;
 
     void synchronizeAttribute(const AtomicString& localName) const;
 
     MutableStylePropertySet& ensureMutableInlineStyle();
     void clearMutableInlineStyleIfEmpty();
 
     void setTabIndex(int);
     short tabIndex() const override;
 
-    void incrementProxyCount();
-    void decrementProxyCount();
+    // A compositor proxy is a very limited wrapper around an element. It
+    // exposes only those properties that are requested at the time the proxy is
+    // created. In order to know which properties are actually proxied, we
+    // maintain a count of the number of compositor proxies associated with each
+    // property.
+    bool hasCompositorProxy() const;
+    void incrementCompositorProxiedProperties(uint32_t mutableProperties);
+    void decrementCompositorProxiedProperties(uint32_t mutableProperties);
+    uint32_t compositorMutableProperties() const;
 
     // Helpers for V8DOMActivityLogger::logEvent.  They call logEvent only if
     // the element is inDocument() and the context is an isolated world.
     void logEventIfIsolatedWorldAndInDocument(const String& eventName, const String& arg1, const String& arg2);
     void logEventIfIsolatedWorldAndInDocument(const String& eventName, const String& arg1, const String& arg2, const String& arg3);
     void logEventIfIsolatedWorldAndInDocument(const String& eventName, const String& arg1, const String& arg2, const String& arg3, const String& arg4);
 
     DECLARE_VIRTUAL_TRACE();
 
     SpellcheckAttributeState spellcheckAttributeState() const;
@@ skipping 380 matching lines @@
     static PassRefPtrWillBeRawPtr<T> create(const QualifiedName&, Document&)
 #define DEFINE_ELEMENT_FACTORY_WITH_TAGNAME(T) \
     PassRefPtrWillBeRawPtr<T> T::create(const QualifiedName& tagName, Document& document) \
     { \
         return adoptRefWillBeNoop(new T(tagName, document)); \
     }
 
 } // namespace
 
 #endif // Element_h