[Android] Move perf utilities into devil.

build/android/pylib/gtest/test_runner.py

 # Copyright (c) 2012 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 re
 import tempfile
 
 from devil.android import device_errors
 from devil.android import ports
+from devil.android.perf import perf_control
 from pylib import pexpect
 from pylib.base import base_test_result
 from pylib.base import base_test_runner
 from pylib.local import local_test_server_spawner
-from pylib.perf import perf_control
 
 # Test case statuses.
 RE_RUN = re.compile('\\[ RUN      \\] ?(.*)\r\n')
 RE_FAIL = re.compile('\\[  FAILED  \\] ?(.*?)( \\((\\d+) ms\\))?\r\r\n')
 RE_OK = re.compile('\\[       OK \\] ?(.*?)( \\((\\d+) ms\\))?\r\r\n')
 
 # Test run statuses.
 RE_PASSED = re.compile('\\[  PASSED  \\] ?(.*)\r\n')
 RE_RUNNER_FAIL = re.compile('\\[ RUNNER_FAILED \\] ?(.*)\r\n')
 # Signal handlers are installed before starting tests
@@ skipping 180 matching lines @@
   #override
   def TearDown(self):
     """Cleans up the test enviroment for the test suite."""
     for s in self._servers:
       s.TearDown()
     if _TestSuiteRequiresHighPerfMode(self.test_package.suite_name):
       self._perf_controller.SetDefaultPerfMode()
     self.test_package.ClearApplicationState(self.device)
     self.tool.CleanUpEnvironment()
     super(TestRunner, self).TearDown()