Update moved find_depot_tools.py script location

setup_links.py

 #!/usr/bin/env python
 # Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 """Setup links to a Chromium checkout for WebRTC.
@@ skipping 84 matching lines @@
     'third_party/requests',
     'third_party/robolectric',
     'tools/android',
     'tools/grit',
   ]
 if 'ios' in target_os:
   DIRECTORIES.append('third_party/class-dump')
 
 FILES = {
   'chrome/VERSION': None,  # TODO(kjellander): Get rid of this; webrtc:5160.
-  'tools/find_depot_tools.py': None,
   'tools/isolate_driver.py': None,
   'third_party/BUILD.gn': None,
 }
 
 ROOT_DIR = os.path.dirname(os.path.abspath(__file__))
 CHROMIUM_CHECKOUT = os.path.join('chromium', 'src')
 LINKS_DB = 'links'
 
 # Version management to make future upgrades/downgrades easier to support.
 SCHEMA_VERSION = 1
@@ skipping 390 matching lines @@
   except LinkError as e:
     print >> sys.stderr, e.message
     return 3
   finally:
     links_database.close()
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main())