Delete empty mojo python package, and prefix all python packages with mojo_

mojo/python/tests/validation_unittest.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import logging
 import os
 import os.path
 
 import mojo_unittest
 import validation_test_interfaces_mojom
 
 # pylint: disable=E0611
-from mojo import system
-from mojo.bindings import messaging
-from mojo.tests import validation_util
+import mojo_system as system
+from mojo_bindings import messaging
+from mojo_tests import validation_util
 from mopy.paths import Paths
 
 logging.basicConfig(level=logging.ERROR)
 paths = Paths()
 
 
 class RoutingMessageReceiver(messaging.MessageReceiver):
   def __init__(self, request, response):
     self.request = request
     self.response = response
@@ skipping 50 matching lines @@
       handles = [HandleMock() for _ in xrange(data.num_handles)]
       message = messaging.Message(data.data, handles)
       self.assertEquals(message_receiver.Accept(message), expected,
                         'Unexpected result for test: %s' % filename)
 
   def testConformance(self):
     manager = validation_test_interfaces_mojom.ConformanceTestInterface.manager
     proxy = manager._InternalProxy(SinkMessageReceiver(), None)
     stub = manager._Stub(proxy)
     self.runTest('conformance_', stub)