Grant file managers full access to files table

Allows apps with MANAGE_EXTERNAL_STORAGE to query any file through
ContentResolver, as well as open for read and/or write.
MANAGE_EXTERNAL_STORAGE already grants this access through file path
access. This CL only extends this capability to ContentResolver and
MediaStore APIs.

Test: atest FuseDaemonHostTest#testManageExternalStorageQueryOtherAppsFile
Bug: 146113201
Change-Id: Iec66d714d1221b2d8e86c42bcf50e51593e25256
3 files changed