tree f0eab813f44a6935ec3b552535a7a052c21417d1
parent c3ea0d3f799ec1ce7b42b159b80a5f5022bd9b07
author Stanley Tng <stng@google.com> 1529423290 -0700
committer Hansong Zhang <hsz@google.com> 1537996244 -0700

Add Feature Flag for Hearing Aid Profile

Using the Settings App-Developer Options-Feature Flag, allow the user to
enable or disable the Hearing Aid Profile.

Bug: 116317072
Bug: 116044083
Test: Manual testing using Settings App
Change-Id: I58a9d339941e235242c443c85b6f4194b5a296c9
Merged-In: I58a9d339941e235242c443c85b6f4194b5a296c9
(cherry picked from commit fe8c8337edc5e9d6b61d0942873538912d523db7)