Merge "Add FLAG_IMMUTABLE in DevTools app" am: 95e0aacc63

Original change: https://android-review.googlesource.com/c/platform/development/+/2383492

Change-Id: I81b30c05cd3e3748486e45341b542871c7903d55
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>