tree 74677ad9c55e1248d1d587076bcbcd532ef25d51
parent e14ac53d755c6a07c8cc15008f10561d321664fd
author Lujiang Xue <rogerxue@google.com> 1500658757 -0700
committer Roger Xue <rogerxue@google.com> 1501196955 +0000

Set BT to proper scan mode.

- set bt device to connectable and discoverable when in bt setting page.
- set it back to connectable only when leaving the page.

Bug: 63805251

Test: build and flashed
Change-Id: I86bf2a0f45b309d3b0d7763fd714d3aca78f89df
(cherry picked from commit 25d325e0e010736398cb69ed00d37ad4ebf1645b)