Merge "Add per-file OWNERS entry for WritableFlags.java" into main am: bf99335670

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3365800

Change-Id: I7cf2620f5211c458b55201ccc1ab9d82db84b38e
Signed-off-by: Automerger Merge Worker <[email protected]>