Add gogerald@ as an owner of //content/browser/payments

Change-Id: Ic06a5f3b7cd9d150afa715f491b19582b11fcc5b
Reviewed-on: https://chromium-review.googlesource.com/998815
Commit-Queue: Ganggui Tang <gogerald@chromium.org>
Commit-Queue: Rouslan Solomakhin <rouslan@chromium.org>
Reviewed-by: Rouslan Solomakhin <rouslan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548564}

content/browser/payments/OWNERS

 jinho.bang@samsung.com
 rouslan@chromium.org
+gogerald@chromium.org
 
 # COMPONENT: UI>Browser>Payments