Update tools/perf to use cloud_storage from catapult.

tools/perf/fetch_benchmark_deps.py

 #!/usr/bin/env 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.
 
 """This module fetches and prints the dependencies given a benchmark."""
 
 import os
 import sys
 
-sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'telemetry'))
+from core import path_util
 
+path_util.AddCatapultBaseToPath()
 from catapult_base import cloud_storage
+
+path_util.AddTelemetryToPath()
 from telemetry import benchmark_runner
 
 
-def _GetPerfDir(*subdirs):
-  perf_dir = os.path.realpath(os.path.dirname(__file__))
-  return os.path.join(perf_dir, *subdirs)
-
-
-def GetChromiumDir():
-  return _GetPerfDir(os.path.pardir, os.path.pardir, os.path.pardir)
-
-
 def _FetchDependenciesIfNeeded(story_set):
   """ Download files needed by a user story set. """
   # Download files in serving_dirs.
   serving_dirs = story_set.serving_dirs
   for directory in serving_dirs:
     cloud_storage.GetFilesInDirectoryIfChanged(directory, story_set.bucket)
 
   # Download WPR files.
   if any(not story.is_local for story in story_set):
     story_set.wpr_archive_info.DownloadArchivesIfNeeded()
@@ skipping 14 matching lines @@
     if directory == os.path.abspath(os.sep):
       raise ValueError('Trying to serve root directory from HTTP server.')
     for dirpath, _, filenames in os.walk(directory):
       for filename in filenames:
         path_name, extension = os.path.splitext(
             os.path.join(dirpath, filename))
         if extension == '.sha1':
           deps.add(path_name)
 
   # Return relative paths.
-  prefix_len = len(os.path.realpath(GetChromiumDir())) + 1
+  prefix_len = len(os.path.realpath(path_util.GetChromiumSrcDir())) + 1
   return [dep[prefix_len:] for dep in deps if dep]
 
 
 def _show_usage():
   print ('Usage: %s benchmark_name\n'
          'Fetch the dependencies of benchmark_name.' % sys.argv[0])
 
 
 def main(output=sys.stdout):
   config = benchmark_runner.ProjectConfig(
-      top_level_dir=_GetPerfDir(),
-      benchmark_dirs=[_GetPerfDir('benchmarks')])
+      top_level_dir=path_util.GetPerfDir(),
+      benchmark_dirs=[path_util.GetPerfDir('benchmarks')])

[eakuefner, 2016/01/08 19:54:54]

While you're at it, maybe you can consider adding client_config in this patch?
If you do it I'll close my https://codereview.chromium.org/1383773002 which has
not landed yet.

[aiolos (Not reviewing), 2016/01/08 20:25:27]

Done.

 
   name = sys.argv[1]
   benchmark = benchmark_runner.GetBenchmarkByName(name, config)
   if not benchmark:
     raise ValueError('No such benchmark: %s' % name)
 
   # Download files according to specified benchmark.
   story_set = benchmark().CreateStorySet(None)
 
   _FetchDependenciesIfNeeded(story_set)
 
   # Print files downloaded.
   deps = _EnumerateDependencies(story_set)
   for dep in deps:
     print >> output, dep
 
 
 if __name__ == '__main__':
   if len(sys.argv) != 2 or sys.argv[1][0] == '-':
     _show_usage()
   else:
     main()