1# Copyright 2014 The Chromium Authors. All rights reserved.
2# Use of this source code is governed by a BSD-style license that can be
3# found in the LICENSE file.
4
5import exceptions
6
7
8# pylint: disable=R0201
9class BaseController(object):
10  def StartTracing(self, _):
11    raise exceptions.NotImplementedError
12
13  def StopTracing(self):
14    raise exceptions.NotImplementedError
15
16  def PullTrace(self):
17    raise exceptions.NotImplementedError
18