Do not exclude the last revision in the range returned by gitiles.

scripts/slave/recipe_modules/auto_bisect/example.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
 
 DEPS = [
     'auto_bisect',
     'chromium_tests',
     'recipe_engine/json',
@@ skipping 363 matching lines @@
     basic_test += api.properties(bisect_config=_get_config(extra_config))
   basic_test += api.properties(
       buildbotURL= 'https://build.chromium.org/p/tryserver.chromium.perf')
   return basic_test
 
 
 def _get_revision_range_step_data(api, range_data):
   """Adds canned output for fetch_intervening_revisions.py."""
   min_rev = range_data[0]['hash']
   max_rev = range_data[-1]['hash']
-  output = [[r['hash'], 'ignored'] for r in range_data[1:-1]]
+  output = [[r['hash'], 'ignored'] for r in range_data[1:]]
   step_name = ('Expanding revision range.for revisions %s:%s' %
                (min_rev, max_rev))
   return api.step_data(step_name, stdout=api.json.output(output))
 
 
 def _get_config(params=None):
   """Returns a sample bisect config dict with some fields overridden."""
   example_config = {
       'test_type': 'perf',
       'command': (
@@ skipping 62 matching lines @@
           yield api.step_data(step_name, stdout=api.raw_io.output(file_hash))
         step_name = 'Expanding revision range for revision %s on depot %s'
         step_name %= (interval[-1], depot_name)
         stdout = api.json.output([(r, 0) for r in interval[:-1]])
         yield api.step_data(step_name, stdout=stdout)
 
     if 'cl_info' in revision_data:
       step_name = 'Reading culprit cl information.'
       stdout = api.json.output(revision_data['cl_info'])
       yield api.step_data(step_name, stdout=stdout)