[Android][telemetry] Update pylib imports for modules that moved into devil.

build/android/emma_coverage_stats.py

 #!/usr/bin/python
 # Copyright 2015 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.
 
 """Generates incremental code coverage reports for Java code in Chromium.
 
 Usage:
 
   build/android/emma_coverage_stats.py -v --out <output file path> --emma-dir
     <EMMA file directory> --lines-for-coverage-file
     <path to file containing lines for coverage>
 
   Creates a JSON representation of the overall and file coverage stats and saves
   this information to the specified output file.
 """
 
 import argparse
 import collections
 import json
 import logging
 import os
 import re
 import sys
 from xml.etree import ElementTree
 
-from pylib.utils import run_tests_helper
+from devil.utils import run_tests_helper
 
 NOT_EXECUTABLE = -1
 NOT_COVERED = 0
 COVERED = 1
 PARTIALLY_COVERED = 2
 
 # Coverage information about a single line of code.
 LineCoverage = collections.namedtuple(
     'LineCoverage',
     ['lineno', 'source', 'covered_status', 'fractional_line_coverage'])
@@ skipping 428 matching lines @@
                          'code for which coverage information is desired.')
   argparser.add_argument('-v', '--verbose', action='count',
                          help='Print verbose log information.')
   args = argparser.parse_args()
   run_tests_helper.SetLogLevel(args.verbose)
   GenerateCoverageReport(args.lines_for_coverage_file, args.out, args.emma_dir)
 
 
 if __name__ == '__main__':
   sys.exit(main())