Add ios-simulator-cronet to tryserver.chromium.mac

masters/master.tryserver.chromium.mac/master.cfg

Index: masters/master.tryserver.chromium.mac/master.cfg
diff --git a/masters/master.tryserver.chromium.mac/master.cfg b/masters/master.tryserver.chromium.mac/master.cfg
index a025c58f46365aa5eadbbb655c780f81ddc34fac..629a756f243b214dfcaeafed52fb6db720276d7c 100644
--- a/masters/master.tryserver.chromium.mac/master.cfg
+++ b/masters/master.tryserver.chromium.mac/master.cfg
@@ -67,6 +67,11 @@ b_ios_simulator_gn = {
   'factory': baseFactory('ios/try'),
 }
 
+b_ios_simulator_cronet = {
+  'name': 'ios-simulator-cronet',
+  'factory': baseFactory('ios/try'),
+}
+
 b_ios_device = {
   'name': 'ios-device',
   'factory': baseFactory('ios/try'),
@@ -229,6 +234,7 @@ variable_builders = [
 c['builders'] = [
   b_ios_simulator,
   b_ios_simulator_gn,
+  b_ios_simulator_cronet,
   b_ios_device,
   b_ios_device_gn,
   b_mac_nacl_sdk,