Rewrite Shadow DOM distribution engine to support partial synchronous distribution for v1

third_party/WebKit/Source/core/dom/shadow/ShadowRoot.h

 /*
  * Copyright (C) 2011 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 96 matching lines @@
     unsigned childShadowRootCount() const { return m_childShadowRootCount; }
     unsigned numberOfStyles() const { return m_numberOfStyles; }
 
     void recalcStyle(StyleRecalcChange);
 
     void registerScopedHTMLStyleChild();
     void unregisterScopedHTMLStyleChild();
 
     SlotAssignment& ensureSlotAssignment();
 
-    void didAddSlot();
-    void didRemoveSlot();
-    const HeapVector<Member<HTMLSlotElement>>& descendantSlots();
-
-    void assignV1();
     void distributeV1();
 
-    HTMLSlotElement* assignedSlotFor(const Node&) const;
-
     Element* activeElement() const;
 
     String innerHTML() const;
     void setInnerHTML(const String&, ExceptionState&);
 
     Node* cloneNode(bool, ExceptionState&);
 
     void setDelegatesFocus(bool flag) { m_delegatesFocus = flag; }
     bool delegatesFocus() const { return m_delegatesFocus; }
 
@@ skipping 14 matching lines @@
 
     ShadowRootRareDataV0& ensureShadowRootRareDataV0();
 
     void addChildShadowRoot() { ++m_childShadowRootCount; }
     void removeChildShadowRoot() { DCHECK_GT(m_childShadowRootCount, 0u); --m_childShadowRootCount; }
     void invalidateDescendantInsertionPoints();
 
     // ShadowRoots should never be cloned.
     Node* cloneNode(bool) override { return nullptr; }
 
-    void invalidateDescendantSlots();
-    unsigned descendantSlotCount() const;
-
     Member<ShadowRootRareDataV0> m_shadowRootRareDataV0;
     Member<StyleSheetList> m_styleSheetList;
     Member<SlotAssignment> m_slotAssignment;
-    unsigned m_numberOfStyles : 13;
+    unsigned m_numberOfStyles : 14;
     unsigned m_childShadowRootCount : 13;
     unsigned m_type : 2;
     unsigned m_registeredWithParentShadowRoot : 1;
     unsigned m_descendantInsertionPointsIsValid : 1;
     unsigned m_delegatesFocus : 1;
-    unsigned m_descendantSlotsIsValid : 1;
 };
 
 inline Element* ShadowRoot::activeElement() const
 {
     return adjustedFocusedElement();
 }
 
 inline ShadowRoot* Element::shadowRootIfV1() const
 {
     ShadowRoot* root = this->shadowRoot();
     if (root && root->isV1())
         return root;
     return nullptr;
 }
 
 DEFINE_NODE_TYPE_CASTS(ShadowRoot, isShadowRoot());
 DEFINE_TYPE_CASTS(ShadowRoot, TreeScope, treeScope, treeScope->rootNode().isShadowRoot(), treeScope.rootNode().isShadowRoot());
 DEFINE_TYPE_CASTS(TreeScope, ShadowRoot, shadowRoot, true, true);
 
 CORE_EXPORT std::ostream& operator<<(std::ostream&, const ShadowRootType&);
 
 } // namespace blink
 
 #endif // ShadowRoot_h