Merge "Declare the headers of the ndk_library" am: 2167e10a98 am: 276cc2c581 am: 3e4290a5f3

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2212876

Change-Id: I12f269f0c1dc58516f88e9bc83e25755d8ba0ed3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>