Cleanup: Presubmit API is built into depot_tools.

chrome/common/extensions/docs/server2/PRESUBMIT.py

 # Copyright (c) 2012 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.
 
 """Presubmit script for changes affecting extensions docs server
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
-for more details about the presubmit API built into gcl.
+for more details about the presubmit API built into depot_tools.
 """
 
 # Run build_server so that files needed by tests are copied to the local
 # third_party directory.
 import os
 import sys
 
 WHITELIST = [ r'.+_test.py$' ]
 # The integration tests are selectively run from the PRESUBMIT in
 # chrome/common/extensions.
@@ skipping 71 matching lines @@
       _CheckYamlConsistency(input_api, output_api) +
       input_api.canned_checks.RunUnitTestsInDirectory(
           input_api, output_api, '.', whitelist=WHITELIST, blacklist=BLACKLIST)
   )
 
 def CheckChangeOnUpload(input_api, output_api):
   return _RunPresubmit(input_api, output_api)
 
 def CheckChangeOnCommit(input_api, output_api):
   return _RunPresubmit(input_api, output_api)