add new Skia team member to committers list

BUG=skia:

NOTRY=true
TBR=rmistry@google.com

Review URL: https://codereview.chromium.org/885493008
diff --git a/CQ_COMMITTERS b/CQ_COMMITTERS
index 1a0684d..2538a78 100644
--- a/CQ_COMMITTERS
+++ b/CQ_COMMITTERS
@@ -26,6 +26,7 @@
 kelvinly@google.com
 krajcevski@google.com
 mike@reedtribe.org
+msarett@google.com
 mtklein@chromium.org
 mtklein@google.com
 reed@chromium.org