Update bisect_lib with the changes committed in the infra/build repo.

experimental/bisect_lib/chromium_revisions.py

-# 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.
-
-import json
-import urllib2
-
-BASE_URL = 'https://chromium.googlesource.com/chromium/src/+'
-PADDING = ')]}\'\n'  # Gitiles padding.
-
-def revision_info(revision):
-  """Gets information about a chromium revision.
-
-  Args:
-    revision (str): The git commit hash of the revision to check.
-
-  Returns:
-    A dictionary containing the author, email, 'subject' (the first line of the
-    commit message) the 'body' (the whole message) and the date in string format
-    like "Sat Oct 24 00:33:21 2015".
-  """
-
-  url = '%s/%s?format=json' % (BASE_URL, revision)
-  response = urllib2.urlopen(url).read()
-  response = json.loads(response[len(PADDING):])
-  message = response['message'].splitlines()
-  subject = message[0]
-  body = '\n'.join(message[1:])
-  result = {
-      'author': response['author']['name'],
-      'email': response['author']['email'],
-      'subject': subject,
-      'body': body,
-      'date': response['committer']['time'],
-  }
-  return result
-
-
-def revision_range(first_revision, last_revision):
-  """Gets the revisions in chromium between first and last including the latter.
-
-  Args:
-    first_revision (str): The git commit of the first revision in the range.
-    last_revision (str): The git commit of the last revision in the range.
-
-  Returns:
-    A list of dictionaries, one for each revision after the first revision up to
-    and including the last revision. For each revision, its dictionary will
-    contain information about the author and the comitter and the commit itself
-    analogously to the 'git log' command. See test_data/MOCK_RANGE_RESPONSE_FILE
-    for an example.
-  """
-  url = '%slog/%s..%s?format=json' % (BASE_URL, first_revision, last_revision)
-  response = urllib2.urlopen(url).read()
-  response = json.loads(response[len(PADDING):])
-  return response['log']