Add brianji to multitasking-eng owners section.

Bug: N/A
Flag: EXEMPT OWNERS change
Test: N/A
Change-Id: I70eae3d6e1a4c253ec5f7e70af1cf4441e865e06
diff --git a/OWNERS b/OWNERS
index e715b8b..32c82c5 100644
--- a/OWNERS
+++ b/OWNERS
@@ -29,6 +29,7 @@
 peanutbutter@google.com
 jeremysim@google.com
 atsjenk@google.com
+brianji@google.com
 
 # Overview eng team
 alexchau@google.com