Set capture controls invisible when in filmstrip

Though covered by the filmstrip, by being visible in filmstrip these
controls are reachable in TalkBack when in filmstrip which is confusing.
This CL makes them invisible in filmstrip and filmstrip Talkback is now
clean

Bug: 13589550
Change-Id: Ib92823a6efb07a4f56a83516e7decf08397c6edf
2 files changed