tree bad7b990f6dd5d0033d41eb2c51f7a24e66f4269
parent 5e12def0e205065561e1e64c849bcc7e1df2cccb
author Maurice Lam <yukl@google.com> 1498607776 -0700
committer Maurice Lam <yukl@google.com> 1498677462 -0700

Add ButtonBarLayout

Add custom (linear) layout which will stack the buttons vertically
when there is not enough horizontal space.

Test: Manual
Bug: 62488121
Change-Id: I8d5cc72d07514627e800382267f8850531fce3d2