Merge "Implement content protection processor" into udc-qpr-dev am: 9d71b573 am: b497cc7e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23466114



Change-Id: Ib5b238774f00d82c3a8298d26af7e3637db4884b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>