Add link to cit bug in the exception for coredumps

tools/utils.py

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 # This file contains a set of utilities functions used by other Python-based
 # scripts.
 
 import commands
 import contextlib
 import datetime
@@ skipping 977 matching lines @@
       import winreg
     except ImportError:
       import _winreg as winreg
     for wowbit in [winreg.KEY_WOW64_64KEY, winreg.KEY_WOW64_32KEY]:
       try:
          with winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE,
                              WindowsCoredumpEnabler.IMGEXEC_NAME,
                              0,
                              winreg.KEY_READ | wowbit) as handle:
           raise Exception(
-              "Found werfault.exe was disabled. Probably by puppet. Too bad")
+              "Found werfault.exe was disabled. Probably by puppet. Too bad! "
+              "(For more information see https://crbug.com/691971)")
       except OSError:
         # If the open did not work the werfault.exe execution setting is as it
         # should be.
         pass
 
     if throw:
       missing_as_string = ', '.join([str(c) for c in missing])
       raise Exception('Missing crash dumps for: %s' % missing_as_string)
 
 @contextlib.contextmanager
@@ skipping 15 matching lines @@
     return contextlib.nested(WindowsCoredumpEnabler(),
                              WindowsCoreDumpArchiver())
   else:
     # We don't have support for MacOS yet.
     assert osname == 'macos'
     return NooptCoreDumpArchiver()
 
 if __name__ == "__main__":
   import sys
   Main()