Move 5 VMs from the optional mac pool to the mac_cq pool.

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

Index: masters/master.tryserver.chromium.mac/slaves.cfg
diff --git a/masters/master.tryserver.chromium.mac/slaves.cfg b/masters/master.tryserver.chromium.mac/slaves.cfg
index e48ee587892ca84d10213bdec1728b299dc29729..437beae9babf67edd7abfed21ba56d47517caf84 100644
--- a/masters/master.tryserver.chromium.mac/slaves.cfg
+++ b/masters/master.tryserver.chromium.mac/slaves.cfg
@@ -11,15 +11,14 @@ def mac():
       ['vm%d-m4' % i for i in ([213, 256, 257, 258, 902, 903, 1000] +
                                range(277, 300) + range(552, 555) +
                                range(682, 711) + range(860, 870) +
-                               range(969, 987))])
+                               range(969, 987)) + range(783, 788)])
   cq_builders = [
       'mac_chromium_compile_dbg_ng',
       'mac_chromium_gyp_rel',
       'mac_chromium_rel_ng',
   ]
 
-  optional0_slaves = ['vm%d-m4' % i for i in ([713, 645, 646, 647, 648] +
-                                              range(783, 788))]
+  optional0_slaves = ['vm%d-m4' % i for i in [713, 645, 646, 647, 648]]
   optional0_builders = [
       'mac_chromium_dbg_ng',
       'mac_chromium_gyp_dbg',