[autotest] Code cleanup.

Rename methods to avoid confusing; it's only the run_once method that can be called from the controller file.

BUG=chromium:771584
TEST=against local setup

Change-Id: Ifb10405364eb45805259d821dbcc95e0fd49d3dd
Reviewed-on: https://chromium-review.googlesource.com/774284
Reviewed-by: Denis Tosic <dtosic@chromium.org>
Reviewed-by: Claes Malmnäs <malmnas@google.com>
Commit-Queue: Claes Malmnäs <malmnas@google.com>
Tested-by: Claes Malmnäs <malmnas@google.com>
Trybot-Ready: Claes Malmnäs <malmnas@google.com>
diff --git a/server/site_tests/enterprise_CFM_MimoSanity/enterprise_CFM_MimoSanity.py b/server/site_tests/enterprise_CFM_MimoSanity/enterprise_CFM_MimoSanity.py
index f02f349..9759a07 100644
--- a/server/site_tests/enterprise_CFM_MimoSanity/enterprise_CFM_MimoSanity.py
+++ b/server/site_tests/enterprise_CFM_MimoSanity/enterprise_CFM_MimoSanity.py
@@ -47,11 +47,11 @@
             power_cycle_usb_util.power_cycle_usb_vidpid(self._host, self._board,
                  MIMO_VID, MIMO_PID)
         except KeyError:
-           raise error.TestFail('Counld\'t find target device: '
+           raise error.TestFail('Could not find target device: '
                                 'vid:pid {}:{}'.format(MIMO_VID, MIMO_PID))
 
 
-    def _run_power_cycle_mimo_test(self):
+    def _test_power_cycle_mimo(self):
         """Power Cycle Mimo device for multiple times"""
         self._power_cycle_mimo_device()
         logging.info('Powercycle done for Mimo %s:%s', MIMO_VID, MIMO_PID)
@@ -118,7 +118,7 @@
             get_usb_devices._verify_usb_device_ok(self.usb_data, _key)
 
 
-    def _run_reboot_test(self):
+    def _reboot_test(self):
         """Reboot testing for Mimo."""
 
         boot_id = self._host.get_boot_id()
@@ -134,7 +134,7 @@
         self._kernel_usb_sanity_test()
 
 
-    def _run_hangout_test(self) :
+    def _test_mimo_in_call(self) :
         """
         Start a hangout session and end the session after random time.
 
@@ -187,6 +187,6 @@
 
         for i in xrange(1, repetitions + 1):
             logging.info('Running test cycle %d/%d', i, repetitions)
-            self._run_reboot_test()
-            self._run_hangout_test()
-            self._run_power_cycle_mimo_test()
+            self._test_reboot()
+            self._test_mimo_in_call()
+            self._test_power_cycle_mimo()