Remove old OWNER deps in content/renderer/android

Currently content/renderer/android/OWNERS lists a dependency on
content/renderer/input which was removed. That owner file is being temporarily
re-added[1]. As without it all changes to content/renderer/android fail,
including updating the owners file.

This change removes the dependency, and places dtapuska@ as an OWNER.

This will be followed by a revert of the temporary re-add of
content/renderer/input/OWNERS

[1] https://chromium-review.googlesource.com/c/chromium/src/+/2422141/

Bug: 1097816
Change-Id: I06a554dc52dfd9820048eb14af79163db97e40ff
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2422181Reviewed-by: Dave Tapuska <dtapuska@chromium.org>
Commit-Queue: Jonathan Ross <jonross@chromium.org>
Cr-Commit-Position: refs/heads/master@{#809319}

content/renderer/android/OWNERS

-file://content/renderer/input/OWNERS
-
+dtapuska@chromium.org
 boliu@chromium.org