Update top-level OWNERS.

Change-Id: Ia0d50a989e02e916ff6a65a5d0d6a6fc980c2c80
Reviewed-on: https://chromium-review.googlesource.com/869933Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50704}

OWNERS

@@ -7,6 +7,7 @@ bradnelson@chromium.org
 cbruni@chromium.org
 clemensh@chromium.org
 danno@chromium.org
+delphick@chromium.org
 eholk@chromium.org
 franzih@chromium.org
 gdeepti@chromium.org
@@ -17,26 +18,22 @@ ishell@chromium.org
 jarin@chromium.org
 jgruber@chromium.org
 jkummerow@chromium.org
-jochen@chromium.org
 leszeks@chromium.org
-littledan@chromium.org
 machenbach@chromium.org
 marja@chromium.org
 mlippautz@chromium.org
 mstarzinger@chromium.org
-mtrofin@chromium.org
 mvstanton@chromium.org
 mythria@chromium.org
 neis@chromium.org
 petermarshall@chromium.org
 rmcilroy@chromium.org
-rossberg@chromium.org
 sergiyb@chromium.org
+sigurds@chromium.org
 tebbi@chromium.org
 titzer@chromium.org
 ulan@chromium.org
 verwaest@chromium.org
-vogelheim@chromium.org
 yangguo@chromium.org
 
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