Show capturing UI before review UI in intent countdown timer

Going prematurely to the review UI means you can hit the checkbox
before we have JPEG data. With this change, after countdown you
see a grayed out capture button like normal capture animation,
then the checkbox review UI when the picture is ready.

Bug: 18002016
Change-Id: Ieddd71636f962c127aa470ec0f150987d3d287ab
2 files changed