[src/testing] Add John C and Caleb as OWNERS.

Dirk is out for few weeks, so the only owner available right now
is John B. Seems like some redundancy here would be helpful.
John and I have been doing some work in this area including
work on test_env.py and xvfb.py so it seems like we would be
reasonable OWNERS.

[email protected], [email protected]

Change-Id: Ia5a959a6ab96a6b31507432688b7eb62fbf60cb9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1982222
Reviewed-by: John Budorick <[email protected]>
Reviewed-by: Erik Staab <[email protected]>
Reviewed-by: John Chen <[email protected]>
Commit-Queue: Caleb Rouleau <[email protected]>
Cr-Commit-Position: refs/heads/master@{#727500}
diff --git a/testing/OWNERS b/testing/OWNERS
index 291df571..ef3ee98f 100644
--- a/testing/OWNERS
+++ b/testing/OWNERS
@@ -1,9 +1,11 @@
[email protected]
 [email protected]
 [email protected]
[email protected]
 
 # These aren't actually great contact points for this directory, but
 # changes in this directory are rare and most changes happen in better-owned
 # subdirectories.
 #
 # TEAM: [email protected]
-# COMPONENT: Build
+# COMPONENT: Test