ig_client_cache_add_media -- the viewer's flash cache takes in the media of
one streamed chunk of a stream page: the viewer session and the chunk's media
by their numeric ids, in the answer's order. The app logs one event per chunk
of a tail page (android-451/reels-tab-watch-ten: the tail answer's two
documents of 2 and 13 media are the two recorded events); the viewer's first
page, a prefetch, logs none. The shape is the 451 recording's.
ig_client_cache_add_media-- the viewer's flash cache takes in the media of one streamed chunk of a stream page: the viewer session and the chunk's media by their numeric ids, in the answer's order. The app logs one event per chunk of a tail page (android-451/reels-tab-watch-ten: the tail answer's two documents of 2 and 13 media are the two recorded events); the viewer's first page, a prefetch, logs none. The shape is the 451 recording's.