Added DIR_METADATA files to //third_party/android_
and  removed duplicated metadata from OWNERS files

Bug: 1113033
Change-Id: I2e772b1c28805ca6b9cfc45d2673ff1b25be86bb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2572682
Auto-Submit: Norman Rosas <normando@google.com>
Commit-Queue: Dirk Pranke <dpranke@google.com>
Reviewed-by: Dirk Pranke <dpranke@google.com>
Cr-Commit-Position: refs/heads/master@{#834312}
GitOrigin-RevId: a583261a8696306ad65342cb2f96b98996314fbd