[Findit] Factoring the gitiles (etc) stuff out into its own directory

appengine/findit/common/blame.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.
-
-
-class Region(object):
-  """A region of some (unspecified) file at a (known) revision."""
-  def __init__(self, start, count, revision,
-               author_name, author_email, author_time):
-    self.start = start
-    self.count = count
-    self.revision = revision
-    self.author_name = author_name
-    self.author_email = author_email
-    self.author_time = author_time
-
-  def ToDict(self):
-    return {
-        'start': self.start,
-        'count': self.count,
-        'revision': self.revision,
-        'author_name': self.author_name,
-        'author_email': self.author_email,
-        'author_time': self.author_time
-    }
-
-
-class Blame(list):
-  """A list of regions for a (known) revision of a (known) file."""
-  def __init__(self, revision, path):
-    super(Blame, self).__init__()
-    self.revision = revision
-    self.path = path
-
-  def AddRegion(self, region):
-    self.append(region)
-
-  def ToDict(self):
-    regions = []
-    for region in self:
-      regions.append(region.ToDict())
-    return {
-        'revision': self.revision,
-        'path': self.path,
-        'regions': regions
-    }