Merge "Expose Intent#ACTION_CLEAR_DNS_CACHE" am: 240fdc5d97 am: 844a524110

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1625867

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Id1529bba9922c7482c3e56509780d13bf9c817d1