Move Scoped Storage compat flags definition to frameworks/base

Bug: 150593967
Test: Manual using StorageTest app
Test: atest RestrictedPermissionsTest
Test: atest RestrictedStoragePermissionTest
Test: atest RestrictedStoragePermissionSharedUidTest
Test: atest com.android.providers.media
Merged-In: If023897c7526b7ade20dd9beaea1212f54a03ddc
Change-Id: If023897c7526b7ade20dd9beaea1212f54a03ddc
(cherry picked from commit a2fd03a909a4dfb0c61b233b4e99cc0b38acc0c7)
1 file changed