Make PasswordMetrics#computeForPasswordOrPin() private am: dc151e2b57

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2775384

Change-Id: I161c3d5e45fa53f9e77787f81cec26ef2e509ab8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>