def GetValidateHistogramsError(input_api, output_api, cwd, results):
    'Validates histograms format and index file.'
    exit_code = input_api.subprocess.call([input_api.python_executable, 'validate_format.py'], cwd=cwd)
    if (exit_code != 0):
        error_msg = ('Histograms are not well-formatted; please run %s/validate_format.py and fix the reported errors.' % cwd)
        results.append(output_api.PresubmitError(error_msg))
    exit_code = input_api.subprocess.call([input_api.python_executable, 'validate_histograms_index.py'], cwd=cwd)
    if (exit_code != 0):
        error_msg = ('Histograms index file is not up-to-date. Please run %s/histogram_paths.py to update it' % cwd)
        results.append(output_api.PresubmitError(error_msg))
Validates histograms format and index file.
def GetValidateHistogramsError(input_api, output_api, cwd, results):
    
    exit_code = input_api.subprocess.call([input_api.python_executable, 'validate_format.py'], cwd=cwd)
    if (exit_code != 0):
        error_msg = ('Histograms are not well-formatted; please run %s/validate_format.py and fix the reported errors.' % cwd)
        results.append(output_api.PresubmitError(error_msg))
    exit_code = input_api.subprocess.call([input_api.python_executable, 'validate_histograms_index.py'], cwd=cwd)
    if (exit_code != 0):
        error_msg = ('Histograms index file is not up-to-date. Please run %s/histogram_paths.py to update it' % cwd)
        results.append(output_api.PresubmitError(error_msg))