Add per-file owners for AgentSchedulingGroup.

Change-Id: Ide40db02dcd3f16caf3da24b1283f3dd99348680
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2428271Reviewed-by: Nasko Oskov <nasko@chromium.org>
Commit-Queue: Tal Pressman <talp@chromium.org>
Cr-Commit-Position: refs/heads/master@{#811474}

content/browser/renderer_host/OWNERS

@@ -41,3 +41,8 @@ per-file dwrite_*=drott@chromium.org
 
 # BackForwardCache.
 per-file back_forward_cache*=altimin@chromium.org
+
+# AgentSchedulingGroup (MBI)
+per-file agent_scheduling_group*=talp@chromium.org
+per-file agent_scheduling_group*=kouhei@chromium.org
+per-file agent_scheduling_group*=haraken@chromium.org