Reland "Let anyone update the Android profile version"

This relands commit 9919631e,
which was reverted in daecbaf6,
hopefully with 100% less presubmit breakage. :)

Original change's description:
> Let anyone update the Android profile version
>
> Including autorollers.
>
> This also removes an entry for the now-deleted android.ensure file.
>
> Bug: 803632
> Test: None
> Change-Id: I481b0e2822aee2ac0b6d919aa0ee4a84954f12ed
> Reviewed-on: https://chromium-review.googlesource.com/884233
> Reviewed-by: Tommy Nyquist <nyquist@chromium.org>
> Commit-Queue: George Burgess <gbiv@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#531720}

Bug: 803632
Test: None
Change-Id: I4f0beac1a43b87f1b23476ed787e4a2bb791ce1f
Reviewed-on: https://chromium-review.googlesource.com/885005Reviewed-by: Tommy Nyquist <nyquist@chromium.org>
Commit-Queue: Tommy Nyquist <nyquist@chromium.org>
Cr-Commit-Position: refs/heads/master@{#531778}

chrome/android/OWNERS

@@ -5,7 +5,6 @@ nyquist@chromium.org
 tedchoc@chromium.org
 yfriedman@chromium.org
 
-per-file android.ensure=*
 per-file static_initializers.gni=*
 per-file java_sources.gni=*
 per-file *.gn*=agrieve@chromium.org

chrome/android/profiles/OWNERS

+per-file newest.txt=*