Updating the OWNERS file for desktop capture

Change-Id: If5ddad06f0c5ce306e919de1f3a182986abaa0fe
Bug: webrtc:11938
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/184281
Commit-Queue: Joe Downing <joedow@google.com>
Reviewed-by: Jamie Walch <jamiewalch@chromium.org>
Cr-Commit-Position: refs/heads/master@{#32109}
diff --git a/modules/desktop_capture/OWNERS b/modules/desktop_capture/OWNERS
index eaa671c..79df492 100644
--- a/modules/desktop_capture/OWNERS
+++ b/modules/desktop_capture/OWNERS
@@ -1,2 +1,2 @@
 jamiewalch@chromium.org
-sergeyu@chromium.org
+joedow@chromium.org