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Bug 1321284 - Crash in nsCSSFrameConstructor::GetInsertionPrevSibling when trying to reframe native anonymous content

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* Make StyleChildrenIterator skip NAC generated by root element primary frame ancestors.
* Add nsINode::GetFlattenedTreeParentNodeForStyle.
* Add iterator class to find all restyle roots.

NOTE: Parts 1, 2, and "4.2"

Tag #1375
This commit is contained in:
Matt A. Tobin 2020-04-14 21:50:13 -04:00 • committed by Roy Tam
commit a03838af22
14 changed files with 226 additions and 35 deletions
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8
dom/base/nsINode.h
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@ -920,6 +920,14 @@ public:
*/
inline nsINode* GetFlattenedTreeParentNode() const;
/**
* Like GetFlattenedTreeParentNode, but returns null for any native
* anonymous content that was generated for ancestor frames of the
* root element's primary frame, such as scrollbar elements created
* by the root scroll frame.
*/
inline nsINode* GetFlattenedTreeParentNodeForStyle() const;
/**
* Get the parent nsINode for this node if it is an Element.
* @return the parent node