Add gbeaty@ to //infra/OWNERS.

And fix //third_party/android_sdk/OWNERS to prevent presubmit warnings
when touching //infra/OWNERS.

Change-Id: I4cfaed0f2dfa8b4b2f81e341e8492febe4f83995
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1916964Reviewed-by: John Budorick <jbudorick@chromium.org>
Reviewed-by: Aaron Gable <agable@chromium.org>
Commit-Queue: Ben Pastene <bpastene@chromium.org>
Cr-Commit-Position: refs/heads/master@{#715416}

infra/OWNERS

@@ -4,6 +4,7 @@
 agable@chromium.org
 bpastene@chromium.org
 dpranke@chromium.org
+gbeaty@chromium.org
 hans@chromium.org
 iannucci@chromium.org
 jbudorick@chromium.org

third_party/android_sdk/OWNERS

 agrieve@chromium.org
 jbudorick@chromium.org
-kerz@chromium.org
 michaelbai@chromium.org
 primiano@chromium.org
 rmcilroy@chromium.org
 wnwen@chromium.org
 yfriedman@chromium.org
-# COMPONENT: Infra>Client>Chrome
+
+# COMPONENT: Build
 # TEAM: chromium-reviews@chromium.org