Merge "EventHub: Prevent duplicate descriptors" am: 27883159d3 am: 9ea35a9163 am: 0c0639f181 am: 2194db7fc9 am: cb9d9f1881

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2160836

Change-Id: I52acce6cb00b5f91d5ba05e2119645b84e501226
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>