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

scripts/slave/recipes/bisection/android_bisect.expected/local_basic_recipe_basic_device.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
       "[BUILDER_CACHE]/android_one_perf_bisect",
       "511"
     ],
     "name": "makedirs checkout path",
@@ skipping 1872 matching lines @@
       "git",
       "footers",
       "--position",
       "fc6dfc7ff5b1073408499478969261b826441144"
     ],
     "cwd": "[BUILDER_CACHE]/android_one_perf_bisect/src",
     "name": "resolving hash fc6dfc7ff5b1073408499478969261b826441144",
     "stdout": "/path/to/tmp/"
   },
   {
-    "cmd": [
-      "git",
-      "footers",
-      "--position",
-      "e28dc0d49c331def2a3bbf3ddd0096eb51551155"
-    ],
-    "cwd": "[BUILDER_CACHE]/android_one_perf_bisect/src",
-    "name": "resolving hash e28dc0d49c331def2a3bbf3ddd0096eb51551155",
-    "stdout": "/path/to/tmp/"
-  },
-  {
     "cmd": [],
     "cwd": "[BUILDER_CACHE]/android_one_perf_bisect",
     "name": "Debug Info",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@Debug Info@bisector.lkgr: RevisionState(rev=chromium@e28dc0d49c, values=[], mean_value=None, std_dev=None)@@@",
       "@@@STEP_LOG_LINE@Debug Info@bisector.fkbr: RevisionState(rev=chromium@fc6dfc7ff5, values=[], mean_value=None, std_dev=None)@@@",
       "@@@STEP_LOG_LINE@Debug Info@@@@",
       "@@@STEP_LOG_LINE@Debug Info@Revision       Values         @@@",
       "@@@STEP_LOG_LINE@Debug Info@chromium@e28dc0d49c[]             @@@",
       "@@@STEP_LOG_LINE@Debug Info@chromium@fc6dfc7ff5[]             @@@",
-      "@@@STEP_LOG_LINE@Debug Info@chromium@e28dc0d49c[]             @@@",
       "@@@STEP_LOG_LINE@Debug Info@chromium@fc6dfc7ff5[]             @@@",
       "@@@STEP_LOG_END@Debug Info@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::perf_dashboard]/resources/post_json.py"
     ],
@@ skipping 229 matching lines @@
       "@@@STEP_LOG_LINE@python.inline@  os.remove(report)@@@",
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]