rebaseline_server: download actual-results.json files from GCS instead of SVN

gm/rebaseline_server/compare_rendered_pictures.py

 #!/usr/bin/python
 
 """
 Copyright 2014 Google Inc.
 
 Use of this source code is governed by a BSD-style license that can be
 found in the LICENSE file.
 
 Compare results of two render_pictures runs.
 """
 
 # System-level imports
 import logging
 import os
 import re
-import sys
 import time
 
 # Imports from within Skia
-#
-# TODO(epoger): Once we move the create_filepath_url() function out of
-# download_actuals into a shared utility module, we won't need to import
-# download_actuals anymore.
-#
-# We need to add the 'gm' directory, so that we can import gm_json.py within
-# that directory.  That script allows us to parse the actual-results.json file
-# written out by the GM tool.
-# Make sure that the 'gm' dir is in the PYTHONPATH, but add it at the *end*
-# so any dirs that are already in the PYTHONPATH will be preferred.
-PARENT_DIRECTORY = os.path.dirname(os.path.realpath(__file__))
-GM_DIRECTORY = os.path.dirname(PARENT_DIRECTORY)
-TRUNK_DIRECTORY = os.path.dirname(GM_DIRECTORY)
-if GM_DIRECTORY not in sys.path:
-  sys.path.append(GM_DIRECTORY)
-import download_actuals
+import fix_pythonpath  # must do this first
+from pyutils import url_utils
 import gm_json
 import imagediffdb
 import imagepair
 import imagepairset
 import results
 
 # URL under which all render_pictures images can be found in Google Storage.
 # TODO(epoger): Move this default value into
 # https://skia.googlesource.com/buildbot/+/master/site_config/global_variables.json
 DEFAULT_IMAGE_BASE_URL = 'http://chromium-skia-gm.commondatastorage.googleapis.com/render_pictures/images'
@@ skipping 21 matching lines @@
           where to download the images from
       diff_base_url: base URL within which the client should look for diff
           images; if not specified, defaults to a "file:///" URL representation
           of generated_images_root
     """
     time_start = int(time.time())
     self._image_diff_db = imagediffdb.ImageDiffDB(generated_images_root)
     self._image_base_url = image_base_url
     self._diff_base_url = (
         diff_base_url or
-        download_actuals.create_filepath_url(generated_images_root))
+        url_utils.create_filepath_url(generated_images_root))
     self._load_result_pairs(actuals_root, subdirs)
     self._timestamp = int(time.time())
     logging.info('Results complete; took %d seconds.' %
                  (self._timestamp - time_start))
 
   def _load_result_pairs(self, actuals_root, subdirs):
     """Loads all JSON files found within two subdirs in actuals_root,
     compares across those two subdirs, and stores the summary in self._results.
 
     Args:
@@ skipping 161 matching lines @@
           extra_columns=extra_columns_dict)
     except (KeyError, TypeError):
       logging.exception(
           'got exception while creating ImagePair for'
           ' test="%s", config="%s", urlPair=("%s","%s")' % (
               test, config, imageA_relative_url, imageB_relative_url))
       return None
 
 
 # TODO(epoger): Add main() so this can be called by vm_run_skia_try.sh