CharMatcher.ASCII has been replaced with CharMatcher.ascii().
Bug: 130306229
Test: m checkbuild
Change-Id: I21473e2aa5e432b135fac7f1ecf0a85f52f3951e
Merged-In: I21473e2aa5e432b135fac7f1ecf0a85f52f3951e
Exempt-From-Owner-Approval: cherry pick
(cherry picked from commit 63cffd0246)