Export libtextclassifier am: 0b8b33256f am: ec6a59a0ff am: 8feb63bdaf

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/libtextclassifier/+/10700569

Change-Id: I857ad04e1ec28acd85fa91839ce712aca8a859e6