[Android] Move perf utilities into devil.

build/android/pylib/perf/perf_control_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.
-# pylint: disable=W0212
-
-import os
-import sys
-import unittest
-
-sys.path.append(os.path.join(os.path.dirname(__file__), os.pardir, os.pardir))
-
-from devil.android import device_utils
-from pylib.perf import perf_control
-
-class TestPerfControl(unittest.TestCase):
-  def setUp(self):
-    if not os.getenv('BUILDTYPE'):
-      os.environ['BUILDTYPE'] = 'Debug'
-
-    devices = device_utils.DeviceUtils.HealthyDevices(blacklist=None)
-    self.assertGreater(len(devices), 0, 'No device attached!')
-    self._device = devices[0]
-
-  def testHighPerfMode(self):
-    perf = perf_control.PerfControl(self._device)
-    try:
-      perf.SetPerfProfilingMode()
-      cpu_info = perf.GetCpuInfo()
-      self.assertEquals(len(perf._cpu_files), len(cpu_info))
-      for _, online, governor in cpu_info:
-        self.assertTrue(online)
-        self.assertEquals('performance', governor)
-    finally:
-      perf.SetDefaultPerfMode()
-
-if __name__ == '__main__':
-  unittest.main()