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Lines Matching refs:DocumentVisibilityObserver

216 class DocumentVisibilityObserver : public WillBeGarbageCollectedMixin {
218     DocumentVisibilityObserver(Document&);
219     virtual ~DocumentVisibilityObserver();
223     // Classes that inherit Node and DocumentVisibilityObserver must have a
225     // DocumentVisibilityObserver::setDocument
1064     void registerVisibilityObserver(DocumentVisibilityObserver*);
1065     void unregisterVisibilityObserver(DocumentVisibilityObserver*);
1411     typedef WillBeHeapHashSet<RawPtrWillBeWeakMember<DocumentVisibilityObserver> > DocumentVisibilityObserverSet;