[automerger skipped] Add NativeMediaDrmClearkeyTest to TreeHugger presubmit am: b8d13456 am: 57fe8e4d am: 2eea90e7 -s ours am: e74f1cfa -s ours

am skip reason: Merged-In I036b1c56437568904826f8085848ffa5e911f658 with SHA-1 c0d17b19 is already in history

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2011456

Change-Id: I2abd27c695afbb49e503a2c23eb2e563698ed889