Use the UiBlocker and its delegate method to prevent the flicker.
Fixes: 220837804
Test: Go to Settings > Location and see all items appearing at the same
time.
Change-Id: I2095289b9436ca66970b6a868d5c9780f2b19664
This CL also does the following:
- Change "past 24 hour access" to "recent access"
- Add timestamp to recent access app
- Remove the summary of "Location Services" button
Bug: 180533061
Test: on device
Change-Id: I0405cb6f363243db9f2c9ccf8ab8788b633d1564