text: # Copyright 2017 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.
  
  """Chromium presubmit script to check that BadMessage enums in histograms.xml
  match the corresponding bad_message.h file.
  """
  
  def _RunHistogramChecks(input_api, output_api, histogram_name):
    try:
      # Setup sys.path so that we can call histograms code.
      import sys
      original_sys_path = sys.path
      sys.path = sys.path + [input_api.os_path.join(
        input_api.change.RepositoryRoot(),
        'tools', 'metrics', 'histograms')]
  
      import presubmit_bad_message_reasons
      return presubmit_bad_message_reasons.PrecheckBadMessage(input_api,
        output_api, histogram_name)
    except:
      return [output_api.PresubmitError('Could not verify histogram!')]
    finally:
      sys.path = original_sys_path
  
  def CheckChangeOnUpload(input_api, output_api):
    return _RunHistogramChecks(input_api, output_api, "BadMessageReasonGuestView")
  