[automerger skipped] Add APIs to test_com.android.sdkext module am: da072c31f0 am: cb99ce16ff -s ours am: 21e779a661 -s ours am: b795cd9af2 -s ours

am skip reason: Change-Id I93ed41849868d27c0e3c4eb84c4402242235f0d4 with SHA-1 73ece5b036 is in history

Original change: https://android-review.googlesource.com/c/platform/packages/modules/SdkExtensions/+/1351448

Change-Id: I48f0a263979beba96c8afff7d5e823382f339da8