Adding Findit variable builders corresponding to those in chromium.webkit

masters/master.tryserver.chromium.linux/master.cfg

Index: masters/master.tryserver.chromium.linux/master.cfg
diff --git a/masters/master.tryserver.chromium.linux/master.cfg b/masters/master.tryserver.chromium.linux/master.cfg
index e0da222888a8e5b9a99b2490ddea2ab44cb1ad25..94db8ef7d7cff8c8f56a51d198ecf7dac4ae2cc4 100644
--- a/masters/master.tryserver.chromium.linux/master.cfg
+++ b/masters/master.tryserver.chromium.linux/master.cfg
@@ -389,6 +389,26 @@ variable_builders = [
     'factory': m_annotator.BaseFactory('findit/chromium/compile'),
     'slavebuilddir': 'linux_cast',
   },
+  {
+    'name': 'linux_chromium_webkit_variable',
+    'factory': m_annotator.BaseFactory('findit/chromium/compile'),
+    'slavebuilddir': 'linux_layout',
+  },
+  {
+    'name': 'linux_chromium_webkit_asan_variable',
+    'factory': m_annotator.BaseFactory('findit/chromium/compile'),
+    'slavebuilddir': 'linux_layout_asan',
+  },
+  {
+    'name': 'linux_chromium_webkit_leak_variable',
+    'factory': m_annotator.BaseFactory('findit/chromium/compile'),
+    'slavebuilddir': 'linux_layout_leak',
+  },
+  {
+    'name': 'linux_chromium_webkit_msan_variable',
+    'factory': m_annotator.BaseFactory('findit/chromium/compile'),
+    'slavebuilddir': 'linux_layout_msan',
+  },
 ]
 
 for board in chromeos_boards: