Merge "Add a shared filegroup for non-updatable stub sources" am: 4ffb28c5f3 am: 4d79002c3c am: 916e38597d

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1655731

Change-Id: I1ac2e12c782acac9087ff741676406557a19859e