Adding smaier to android_deps OWNERS

Change-Id: Id57b2d1e2f2749903f50c2c20e721faa650c2beb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1655035
Auto-Submit: Sam Maier <smaier@chromium.org>
Commit-Queue: Peter Wen <wnwen@chromium.org>
Reviewed-by: Peter Wen <wnwen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#668404}

third_party/android_deps/OWNERS

 agrieve@chromium.org
 jbudorick@chromium.org
+smaier@chromium.org
 wnwen@chromium.org
 
 # OS: Android