Export libtextclassifier am: 4b69d3adec am: 2d6420cef2 am: 888359ceef

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/libtextclassifier/+/11083256

Change-Id: I776fdb6e43ef82017a74f14b0dac1c0e10d174ad