Add twellington and yusufo to chrome/android/OWNERS

BUG=

Change-Id: I7b7eeb6c445bbae504803659938bb34d81fc5602
Reviewed-on: https://chromium-review.googlesource.com/1120438Reviewed-by: David Trainor <dtrainor@chromium.org>
Reviewed-by: Theresa <twellington@chromium.org>
Reviewed-by: Yusuf Ozuysal <yusufo@chromium.org>
Commit-Queue: Ted Choc <tedchoc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#571506}

chrome/android/OWNERS

@@ -2,7 +2,9 @@ bauerb@chromium.org
 dtrainor@chromium.org
 nyquist@chromium.org
 tedchoc@chromium.org
+twellington@chromium.org
 yfriedman@chromium.org
+yusufo@chromium.org
 
 per-file static_initializers.gni=*
 per-file java_sources.gni=*