Add iOS try bots using the new iOS try bot recipe

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 d97c1e4d01a5ba80ebd6a19deca78dcf6d21479b..ec0aeef01e833a0c7ebece3410cc5a8fbcc5b61e 100644
--- a/masters/master.tryserver.chromium.mac/master.cfg
+++ b/masters/master.tryserver.chromium.mac/master.cfg
@@ -102,7 +102,22 @@ mac_tests = [
 
 b_ios_dbg_simulator = {
   'name': 'ios_dbg_simulator',
-  'factory': m_annotator.BaseFactory('chromium'),
+  'factory': m_annotator.BaseFactory('ios/try'),
+}
+
+b_ios_dbg_simulator_ninja = {
+  'name': 'ios_dbg_simulator_ninja',
+  'factory': m_annotator.BaseFactory('ios/try'),
+}
+
+b_ios_rel_device = {
+  'name': 'ios_rel_device',
+  'factory': m_annotator.BaseFactory('ios/try'),
+}
+
+b_ios_rel_device_ninja = {
+  'name': 'ios_rel_device_ninja',
+  'factory': m_annotator.BaseFactory('ios/try'),
 }
 
 chromium_builders = []
@@ -186,6 +201,9 @@ b_mac_nacl_sdk_build = CreateBuilder(
 
 c['builders'] = [
   b_ios_dbg_simulator,
+  b_ios_dbg_simulator_ninja,
+  b_ios_rel_device,
+  b_ios_rel_device_ninja,
   b_mac_nacl_sdk,
   b_mac_nacl_sdk_build,
 ] + chromium_builders