libmediatranscoding: Update OWNERS file.

Bug: 145233472
Test: None as just change OWNERS
Change-Id: Ia4adac3b71c8fef0aed85cf64c59246a9ef0259d
diff --git a/media/libmediatranscoding/OWNERS b/media/libmediatranscoding/OWNERS
index 02287cb..b08d573 100644
--- a/media/libmediatranscoding/OWNERS
+++ b/media/libmediatranscoding/OWNERS
@@ -1,3 +1,5 @@
-akersten@google.com
+chz@google.com
+gokrishnan@google.com
 hkuang@google.com
 lnilsson@google.com
+pawin@google.com