Activate calling push-to-trunk in auto-roll script.

tools/push-to-trunk/test_scripts.py

Index: tools/push-to-trunk/test_scripts.py
diff --git a/tools/push-to-trunk/test_scripts.py b/tools/push-to-trunk/test_scripts.py
index 56b44a6e4844a059dc41ec9d38cb172f15a02e6c..a8200ee265eb38d5bb84ccc7ab5cdd0721756993 100644
--- a/tools/push-to-trunk/test_scripts.py
+++ b/tools/push-to-trunk/test_scripts.py
@@ -300,6 +300,9 @@ class ScriptTest(unittest.TestCase):
     "vi": LogMock,
   }
 
+  def Call(self, fun, *args, **kwargs):
+    print "Calling %s with %s and %s" % (str(fun), str(args), str(kwargs))
+
   def Command(self, cmd, args="", prefix="", pipe=True):
     return ScriptTest.MOCKS[cmd](self, cmd, args)