Merge "Add Build.IS_DEBUGGABLE to public API" am: 9c16d8e25d

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1397947

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I939354b4a5de3d4ecbab9e43438c39cd3aed9ae0