@class TabSnapshotRequest; @protocol TabSnapshotContentProvider; @interface TabSnapshotQueueItem : NSObject @property (readonly, nonatomic) TabSnapshotRequest *request; @property (readonly, nonatomic) id /* block */ completionHandler; @property (retain, nonatomic) id<TabSnapshotContentProvider> contentProvider; @property (nonatomic) BOOL snappshottingIsInProgress; - (void).cxx_destruct; - (void)appendCompletionHandler:(id /* block */)a0; - (id)initWithRequest:(id)a0 contentProvider:(id)a1 completionHandler:(id /* block */)a2; @end