remove GM result-grooming tools that use skia-autogen

gm/show_gm_changes.py

-#!/usr/bin/python
-# Copyright (c) 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.
-
-
-"""Find and display recent changes in the given GM.
-
-Example usage:
-
-$ python gm/show_gm_changes.py Test-Mac10.7-MacMini4.1-GeForce320M-x86-Debug \
-shadertext_gpu --autogen-path .gm-actuals
-
-Rev    Hash
-15990  10904734222736193002
-10729  10752292282035416719
-8504   2915063876615374518
-71     7546128203733045901
-"""
-
-
-import argparse
-import json
-import os
-import re
-import subprocess
-import sys
-
-
-def _get_hash_and_last_change(gm_name, filepath):
-  """Find the current hash for the given GM and the last-changed revision.
-
-  This function runs "svn blame", which is slow.
-
-  Args:
-      gm_name: string; name of the GM in question.
-      filepath: string; path to the actual-results.json file.
-  Returns:
-      tuple of the form (last_changed_rev, hash), where last_changed_rev is an
-      int and hash is a string, or (None, None) if the file does not exist, the
-      GM is not found in the file, or some other problem occurs. 
-  """
-  if not os.path.isfile(filepath):
-    # If the file doesn't exist, we may have synced to before it was created.
-    return (None, None)
-  output = subprocess.check_output(['svn', 'blame', '--force', filepath])
-  pattern = (r'^\s+\d+\s+.+\s+"%s.png" : {\s*\n\s+\d+\s+.+\s+"allowed-digests" '
-             ': \[\s*\n\s+(\d+)\s+.+\s+\[ "bitmap-64bitMD5",\s+\n*(\d+)')
-  match = re.search(pattern % gm_name, output, re.MULTILINE)
-  if match:
-    try:
-      return (int(match.groups()[0]), match.groups()[1])
-    except Exception:
-      # If there are any problems with the above (incorrect number of matches,
-      # inability to parse an integer), just return None.
-      return (None, None)
-  return (None, None)
-
-
-def find_changes(builder_name, gm_name, autogen_path):
-  """Find and return recent changes in the given GM.
-
-  This function runs "svn blame" and "svn update" numerous times and is
-  therefore very slow.
-
-  Args:
-      builder_name: string; name of the builder.
-      gm_name: string; name of the GM.
-      autogen_path: string; path to skia-autogen checkout.
-  Yields:
-      tuples of the form: (autogen_revision, hash)
-  """
-  actuals_path = os.path.join(autogen_path, builder_name, 'actual-results.json')
-
-  # Capture the initial state of the skia-autogen checkout so that we can return
-  # to the same state later.
-  orig_rev = subprocess.check_output(['svnversion', '.'],
-                                     cwd=autogen_path).rstrip()
-
-  try:
-    last_change_rev, hash = _get_hash_and_last_change(gm_name, actuals_path)
-    while last_change_rev:
-      yield (str(last_change_rev), hash)
-      # Sync to the revision just *before* the last change
-      subprocess.check_call(['svn', 'update', '-r', str(last_change_rev - 1)],
-                            cwd=autogen_path,
-                            stdout=subprocess.PIPE,
-                            stderr=subprocess.PIPE)
-      last_change_rev, hash = _get_hash_and_last_change(gm_name, actuals_path)
-  finally:
-    # Return the repository to its initial state.
-    subprocess.check_call(['svn', 'update', '-r', orig_rev],
-                          cwd=autogen_path,
-                          stdout=subprocess.PIPE,
-                          stderr=subprocess.PIPE)
-
-
-def main():
-  """Find and display recent changes in the given GM."""
-  parser = argparse.ArgumentParser(description=sys.modules[__name__].__doc__)
-  parser.add_argument('builder_name', help='Name of the builder.')
-  parser.add_argument('gm_name', help='Name of the GM.')
-  parser.add_argument('--autogen-path', default=os.curdir,
-                      help=('Path to a skia-autogen checkout. This checkout '
-                            'will be modified but the script will attempt to '
-                            'restore it to its original state. Default: '
-                            '"%(default)s"'))
-  args = parser.parse_args()
-
-  print 'Rev\tHash'
-  for change in find_changes(args.builder_name, args.gm_name,
-                             args.autogen_path):
-    print '\t'.join(change)
-  
-
-if __name__ == '__main__':
-  sys.exit(main())