Fix import path

tools/auto_bisect/fetch_build.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.
 
 """This module contains functions for fetching and extracting archived builds.
 
 The builds may be stored in different places by different types of builders;
 for example, builders on tryserver.chromium.perf stores builds in one place,
 while builders on chromium.linux store builds in another.
 
 This module can be either imported or run as a stand-alone script to download
 and extract a build.
 
 Usage: fetch_build.py <type> <revision> <output_dir> [options]
 """
 
 import argparse
 import errno
 import logging
 import os
 import shutil
 import sys
 import zipfile
 
 _CATAPULT_BASE_PATH = os.path.abspath(os.path.join(
-    __file__, '..', '..', 'third_party', 'catapult', 'catapult_base'))
+    os.path.dirname(__file__), '..', '..', 'third_party', 'catapult',
+    'catapult_base'))
 if _CATAPULT_BASE_PATH not in sys.path:
   sys.path.insert(1, _CATAPULT_BASE_PATH)
 from catapult_base import cloud_storage
 
 import bisect_utils
 
 # Possible builder types.
 PERF_BUILDER = 'perf'
 FULL_BUILDER = 'full'
 ANDROID_CHROME_PERF_BUILDER = 'android-chrome-perf'
@@ skipping 467 matching lines @@
     print 'Build is not available.'
     return 1
 
   FetchFromCloudStorage(bucket_name, remote_path, args.output_dir)
   print 'Build has been downloaded to and extracted in %s.' % args.output_dir
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(Main(sys.argv))