Bug 1293991 - Add remaining process/crash checks for methods of the Marionette class. r=automatedtester

MozReview-Commit-ID: 8FhjkRBxZXR

--HG--
extra : rebase_source : 261fc5693b35c28f25fc7baa204fd3db008540d4

testing/marionette/client/marionette_driver/marionette.py

@@ -989,6 +989,7 @@ class Marionette(object):
         finally:
             self.set_prefs(original_prefs)
 
+    @do_process_check
     def enforce_gecko_prefs(self, prefs):
         """
         Checks if the running instance has the given prefs. If not, it will kill the
@@ -1056,6 +1057,7 @@ class Marionette(object):
                 self.cleanup()
                 raise exc, 'Requested restart of the application was aborted', tb
 
+    @do_process_check
     def restart(self, clean=False, in_app=False):
         """
         This will terminate the currently running instance, and spawn a new instance