Adding Findit variable builders corresponding to those in chromium.webkit

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 3287c7f17c75699eeed6e789d8644a1e5fe32bd5..315a8258b1a0eb43511314159718fc01d47b0f78 100644
--- a/masters/master.tryserver.chromium.mac/master.cfg
+++ b/masters/master.tryserver.chromium.mac/master.cfg
@@ -205,6 +205,21 @@ variable_builders = [
     'factory': m_annotator.BaseFactory('findit/chromium/compile'),
     'slavebuilddir': 'mac_gn'
   },
+  {
+    'name': 'mac_chromium_variable_layout',
+    'factory': m_annotator.BaseFactory('findit/chromium/compile'),
+    'slavebuilddir': 'mac_layout'
+  },
+  {
+    'name': 'mac_chromium_variable_10.10',
+    'factory': m_annotator.BaseFactory('findit/chromium/compile'),
+    'slavebuilddir': 'mac'
+  },
+  {
+    'name': 'mac_chromium_variable_10.10_layout',
+    'factory': m_annotator.BaseFactory('findit/chromium/compile'),
+    'slavebuilddir': 'mac_layout'
+  },
 ]
 
 c['builders'] = [