Requested by translation team

Test: none
Bug: 152054587
Change-Id: I4e204bd7235dad2dfc0c53813a947e4a2b71097c

Bug: 149274976
Test: rebuild
Change-Id: Id3af8c6cae731222236a510a10cbeb9937004862

Hide Context.NETWORK_POLICY_SERVICE as it has no usage.

Bug: 151266974
Test: make checkapi, build
Change-Id: I0586a5ef22f76fa1407219b96cb246f162f02947

Test: atest TetheringTests FrameworksNetTests NetworkStackTests
Bug: 152055812
Change-Id: I0158d88e364772f9ac258bd18955edcdad266ad8

Client may create a WindowContext, but without adding a window using
the corresponding WindowToken, initially creating a surface for the
token is very wasteful.
To avoid this, we should only create surfaces when the client is
needed.

Bug: 150813033
Test: atest WindowTokenTests
Test: No system crash when running FocusHandlingTest.
Change-Id: I0def6a436ad9d60948bfb029b3a7b6b44466d068

Window management files on the client side have normally been dumped in
either android.view or android.app package. This CL starts to
centralized them in android.window package so there is better
separation.

Test: they pass
Bug: 147406652
Bug: 152113464
Bug: 152117221
Change-Id: I4d64bd256e9b3581af0ccf9396f7dd2454132719

When the app widget on the launcher is tapped on:
1. Update AppOps. AppOps treats the underlying app as foreground so the app can get while-in-use
permission.
2. Report a USER_INTERACTION event to UsageStats so UsageStats can
update mLastTimeUsed and mLastTimeVisible of this package.

Bug: 149043079
Test: manual test, tapped on a widget.
Change-Id: Ic8c91190881cf5dcf89f0f72cfd410b0c2e86bf6

Bug: 145132366
Test: diff unsupportedappusage_index.csv
Change-Id: Ic2762ec4eabf6ec6b397d2a3e4fd360e42be566c
Merged-In: Ic2762ec4eabf6ec6b397d2a3e4fd360e42be566c

Bug: 145132366
Test: m dist
Change-Id: I0863d428cdeb56551caa0fd548ab50fdcad96ece
Merged-In: I0863d428cdeb56551caa0fd548ab50fdcad96ece

Bug: 143519689
Test: atest UidAtomTests
Change-Id: Ia1897c9c2ffa11547ec09f899a45cfed9b7b0d5d
Merged-Id: Ia1897c9c2ffa11547ec09f899a45cfed9b7b0d5d

Bug: 150626561
Test: visual
Change-Id: I9f29adbd63d603ce83fbd8fc7d886d3bdb4e01e9

Merge "Add BLUETOOTH_PRIVILEGED permission as a requirement for all new Bluetooth SystemApis and for hidden connect/disconnect APIs." into rvc-dev

Bug: 148311342
Change-Id: I99d6296b8947ba85573a11fc5d07583326dd15da