feedback: Unify and update OWNERS files.

BUG=None
TEST=CQ

Change-Id: I4c7435a686e06d971a837f18443c790de3a8ee35
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2375692Reviewed-by: Ahmed Fakhry <afakhry@chromium.org>
Reviewed-by: Ian Barkley-Yeung <iby@chromium.org>
Commit-Queue: Miriam Zimmerman <mutexlox@chromium.org>
Cr-Commit-Position: refs/heads/master@{#801541}

chrome/browser/chromeos/system_logs/OWNERS

-afakhry@chromium.org
-jkardatzke@chromium.org
+file://components/feedback/OWNERS
 
 # COMPONENT: Platform>Apps>Feedback

chrome/browser/extensions/api/feedback_private/OWNERS

-afakhry@chromium.org
-jkardatzke@chromium.org
-iby@chromium.org
+file://components/feedback/OWNERS
 
 # COMPONENT: Platform>Apps>Feedback

chrome/browser/resources/feedback/OWNERS

-afakhry@chromium.org
-jkardatzke@chromium.org
-iby@chromium.org
+file://components/feedback/OWNERS
 
 # COMPONENT: Platform>Apps>Feedback

components/feedback/OWNERS

 afakhry@chromium.org
-jkardatzke@chromium.org
 iby@chromium.org
-zork@chromium.org
+mutexlox@chromium.org
 
-per-file anonymizer_tool*=jkardatzke@chromium.org
-per-file anonymizer_tool*=iby@chromium.org
+per-file redaction_tool*=iby@chromium.org
+per-file redaction_tool*=mutexlox@chromium.org
 
 # COMPONENT: Platform>Apps>Feedback

extensions/browser/api/feedback_private/OWNERS

-afakhry@chromium.org
-jkardatzke@chromium.org
+file://components/feedback/OWNERS
 
 # COMPONENT: Platform>Apps>Feedback