Update OWNERS files.

R=bmeurer@chromium.org

Change-Id: Iece8e73581e99456f9647b9ae6af6045305811f4
Reviewed-on: https://chromium-review.googlesource.com/1139058Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54483}

OWNERS

@@ -10,10 +10,10 @@ clemensh@chromium.org
 danno@chromium.org
 delphick@chromium.org
 eholk@chromium.org
-franzih@chromium.org
 gdeepti@chromium.org
 gsathya@chromium.org
 hablich@chromium.org
+herhut@chromium.org
 hpayer@chromium.org
 ishell@chromium.org
 jarin@chromium.org
@@ -22,6 +22,7 @@ jkummerow@chromium.org
 kschimpf@chromium.org
 leszeks@chromium.org
 machenbach@chromium.org
+mathias@chromium.org
 marja@chromium.org
 mlippautz@chromium.org
 mslekova@chromium.org

src/debug/OWNERS

 set noparent
 
 bmeurer@chromium.org
-franzih@chromium.org
 jgruber@chromium.org
 mvstanton@chromium.org
 verwaest@chromium.org