tree da944d70c8f0520f6fb4d9bb424b02c5d38965e9
parent 4a62effbfe8ad9a0eb7049c2f52a57d39bb64e29
author Phil Weaver <pweaver@google.com> 1460088117 -0700
committer Phil Weaver <pweaver@google.com> 1460146004 -0700

Reduce unnecessary accessibility cache clearing.

Tracking if accessibility focus is being cleared because it is being
set to another view in the same window. In this case, leave
accessibility focus on the window.

This change greatly reduces the amount of cache re-indexing.
Previously we flushed the cache every time accessibility focus moved.

Bug: 28077283
Change-Id: If80899d36e7f58b22635f844bdd4ea37a55b875e