Set ANGLE lib apk targetSdkVersion to 28 Bug: angleproject:2418 Change-Id: Ia146c202cff96b1de9cb55ee44fa5479cef36b53 Reviewed-on: https://chromium-review.googlesource.com/1039777 Reviewed-by: Courtney Goeltzenleuchter <courtneygo@google.com> Reviewed-by: Yuly Novikov <ynovikov@chromium.org> Commit-Queue: Tobin Ehlis <tobine@google.com>