Reformat python files checked by pylint (part 1/2).

After recently changing .pylintrc (see [1]) we discovered that
the presubmit check always checks all the python files when just
one python file gets updated.

This CL moves all these files one step closer to what the linter
wants.

Autogenerated with:

# Added all the files under pylint control to ~/Desktop/to-reformat
cat ~/Desktop/to-reformat | xargs sed -i '1i\\'
git cl format --python --full

This is part 1 out of 2. The second part will fix function names and
will not be automated.

[1] - https://webrtc-review.googlesource.com/c/src/+/186664

No-Presubmit: True
Bug: webrtc:12114
Change-Id: Idfec4d759f209a2090440d0af2413a1ddc01b841
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/190980
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32530}
diff --git a/tools_webrtc/sslroots/generate_sslroots.py b/tools_webrtc/sslroots/generate_sslroots.py
index e4a86d3..ff0052e 100644
--- a/tools_webrtc/sslroots/generate_sslroots.py
+++ b/tools_webrtc/sslroots/generate_sslroots.py
@@ -6,8 +6,6 @@
 # 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.
-
-
 """This is a tool to transform a crt file into a C/C++ header.
 
 Usage:
@@ -41,172 +39,180 @@
 
 
 def main():
-  """The main entrypoint."""
-  parser = OptionParser('usage %prog FILE')
-  parser.add_option('-v', '--verbose', dest='verbose', action='store_true')
-  parser.add_option('-f', '--full_cert', dest='full_cert', action='store_true')
-  options, args = parser.parse_args()
-  if len(args) < 1:
-    parser.error('No crt file specified.')
-    return
-  root_dir = _SplitCrt(args[0], options)
-  _GenCFiles(root_dir, options)
-  _Cleanup(root_dir)
+    """The main entrypoint."""
+    parser = OptionParser('usage %prog FILE')
+    parser.add_option('-v', '--verbose', dest='verbose', action='store_true')
+    parser.add_option('-f',
+                      '--full_cert',
+                      dest='full_cert',
+                      action='store_true')
+    options, args = parser.parse_args()
+    if len(args) < 1:
+        parser.error('No crt file specified.')
+        return
+    root_dir = _SplitCrt(args[0], options)
+    _GenCFiles(root_dir, options)
+    _Cleanup(root_dir)
 
 
 def _SplitCrt(source_file, options):
-  sub_file_blocks = []
-  label_name = ''
-  root_dir = os.path.dirname(os.path.abspath(source_file)) + '/'
-  _PrintOutput(root_dir, options)
-  f = open(source_file)
-  for line in f:
-    if line.startswith('# Label: '):
-      sub_file_blocks.append(line)
-      label = re.search(r'\".*\"', line)
-      temp_label = label.group(0)
-      end = len(temp_label)-1
-      label_name = _SafeName(temp_label[1:end])
-    elif line.startswith('-----END CERTIFICATE-----'):
-      sub_file_blocks.append(line)
-      new_file_name = root_dir + _PREFIX + label_name + _EXTENSION
-      _PrintOutput('Generating: ' + new_file_name, options)
-      new_file = open(new_file_name, 'w')
-      for out_line in sub_file_blocks:
-        new_file.write(out_line)
-      new_file.close()
-      sub_file_blocks = []
-    else:
-      sub_file_blocks.append(line)
-  f.close()
-  return root_dir
+    sub_file_blocks = []
+    label_name = ''
+    root_dir = os.path.dirname(os.path.abspath(source_file)) + '/'
+    _PrintOutput(root_dir, options)
+    f = open(source_file)
+    for line in f:
+        if line.startswith('# Label: '):
+            sub_file_blocks.append(line)
+            label = re.search(r'\".*\"', line)
+            temp_label = label.group(0)
+            end = len(temp_label) - 1
+            label_name = _SafeName(temp_label[1:end])
+        elif line.startswith('-----END CERTIFICATE-----'):
+            sub_file_blocks.append(line)
+            new_file_name = root_dir + _PREFIX + label_name + _EXTENSION
+            _PrintOutput('Generating: ' + new_file_name, options)
+            new_file = open(new_file_name, 'w')
+            for out_line in sub_file_blocks:
+                new_file.write(out_line)
+            new_file.close()
+            sub_file_blocks = []
+        else:
+            sub_file_blocks.append(line)
+    f.close()
+    return root_dir
 
 
 def _GenCFiles(root_dir, options):
-  output_header_file = open(root_dir + _GENERATED_FILE, 'w')
-  output_header_file.write(_CreateOutputHeader())
-  if options.full_cert:
-    subject_name_list = _CreateArraySectionHeader(_SUBJECT_NAME_VARIABLE,
-                                                  _CHAR_TYPE, options)
-    public_key_list = _CreateArraySectionHeader(_PUBLIC_KEY_VARIABLE,
-                                                _CHAR_TYPE, options)
-  certificate_list = _CreateArraySectionHeader(_CERTIFICATE_VARIABLE,
-                                               _CHAR_TYPE, options)
-  certificate_size_list = _CreateArraySectionHeader(_CERTIFICATE_SIZE_VARIABLE,
-                                                    _INT_TYPE, options)
+    output_header_file = open(root_dir + _GENERATED_FILE, 'w')
+    output_header_file.write(_CreateOutputHeader())
+    if options.full_cert:
+        subject_name_list = _CreateArraySectionHeader(_SUBJECT_NAME_VARIABLE,
+                                                      _CHAR_TYPE, options)
+        public_key_list = _CreateArraySectionHeader(_PUBLIC_KEY_VARIABLE,
+                                                    _CHAR_TYPE, options)
+    certificate_list = _CreateArraySectionHeader(_CERTIFICATE_VARIABLE,
+                                                 _CHAR_TYPE, options)
+    certificate_size_list = _CreateArraySectionHeader(
+        _CERTIFICATE_SIZE_VARIABLE, _INT_TYPE, options)
 
-  for _, _, files in os.walk(root_dir):
-    for current_file in files:
-      if current_file.startswith(_PREFIX):
-        prefix_length = len(_PREFIX)
-        length = len(current_file) - len(_EXTENSION)
-        label = current_file[prefix_length:length]
-        filtered_output, cert_size = _CreateCertSection(root_dir, current_file,
-                                                        label, options)
-        output_header_file.write(filtered_output + '\n\n\n')
-        if options.full_cert:
-          subject_name_list += _AddLabelToArray(label, _SUBJECT_NAME_ARRAY)
-          public_key_list += _AddLabelToArray(label, _PUBLIC_KEY_ARRAY)
-        certificate_list += _AddLabelToArray(label, _CERTIFICATE_ARRAY)
-        certificate_size_list += ('  %s,\n') %(cert_size)
+    for _, _, files in os.walk(root_dir):
+        for current_file in files:
+            if current_file.startswith(_PREFIX):
+                prefix_length = len(_PREFIX)
+                length = len(current_file) - len(_EXTENSION)
+                label = current_file[prefix_length:length]
+                filtered_output, cert_size = _CreateCertSection(
+                    root_dir, current_file, label, options)
+                output_header_file.write(filtered_output + '\n\n\n')
+                if options.full_cert:
+                    subject_name_list += _AddLabelToArray(
+                        label, _SUBJECT_NAME_ARRAY)
+                    public_key_list += _AddLabelToArray(
+                        label, _PUBLIC_KEY_ARRAY)
+                certificate_list += _AddLabelToArray(label, _CERTIFICATE_ARRAY)
+                certificate_size_list += ('  %s,\n') % (cert_size)
 
-  if options.full_cert:
-    subject_name_list += _CreateArraySectionFooter()
-    output_header_file.write(subject_name_list)
-    public_key_list += _CreateArraySectionFooter()
-    output_header_file.write(public_key_list)
-  certificate_list += _CreateArraySectionFooter()
-  output_header_file.write(certificate_list)
-  certificate_size_list += _CreateArraySectionFooter()
-  output_header_file.write(certificate_size_list)
-  output_header_file.write(_CreateOutputFooter())
-  output_header_file.close()
+    if options.full_cert:
+        subject_name_list += _CreateArraySectionFooter()
+        output_header_file.write(subject_name_list)
+        public_key_list += _CreateArraySectionFooter()
+        output_header_file.write(public_key_list)
+    certificate_list += _CreateArraySectionFooter()
+    output_header_file.write(certificate_list)
+    certificate_size_list += _CreateArraySectionFooter()
+    output_header_file.write(certificate_size_list)
+    output_header_file.write(_CreateOutputFooter())
+    output_header_file.close()
 
 
 def _Cleanup(root_dir):
-  for f in os.listdir(root_dir):
-    if f.startswith(_PREFIX):
-      os.remove(root_dir + f)
+    for f in os.listdir(root_dir):
+        if f.startswith(_PREFIX):
+            os.remove(root_dir + f)
 
 
 def _CreateCertSection(root_dir, source_file, label, options):
-  command = 'openssl x509 -in %s%s -noout -C' %(root_dir, source_file)
-  _PrintOutput(command, options)
-  output = commands.getstatusoutput(command)[1]
-  renamed_output = output.replace('unsigned char XXX_',
-                                  'const unsigned char ' + label + '_')
-  filtered_output = ''
-  cert_block = '^const unsigned char.*?};$'
-  prog = re.compile(cert_block, re.IGNORECASE | re.MULTILINE | re.DOTALL)
-  if not options.full_cert:
-    filtered_output = prog.sub('', renamed_output, count=2)
-  else:
-    filtered_output = renamed_output
+    command = 'openssl x509 -in %s%s -noout -C' % (root_dir, source_file)
+    _PrintOutput(command, options)
+    output = commands.getstatusoutput(command)[1]
+    renamed_output = output.replace('unsigned char XXX_',
+                                    'const unsigned char ' + label + '_')
+    filtered_output = ''
+    cert_block = '^const unsigned char.*?};$'
+    prog = re.compile(cert_block, re.IGNORECASE | re.MULTILINE | re.DOTALL)
+    if not options.full_cert:
+        filtered_output = prog.sub('', renamed_output, count=2)
+    else:
+        filtered_output = renamed_output
 
-  cert_size_block = r'\d\d\d+'
-  prog2 = re.compile(cert_size_block, re.MULTILINE | re.VERBOSE)
-  result = prog2.findall(renamed_output)
-  cert_size = result[len(result) - 1]
+    cert_size_block = r'\d\d\d+'
+    prog2 = re.compile(cert_size_block, re.MULTILINE | re.VERBOSE)
+    result = prog2.findall(renamed_output)
+    cert_size = result[len(result) - 1]
 
-  return filtered_output, cert_size
+    return filtered_output, cert_size
 
 
 def _CreateOutputHeader():
-  output = ('/*\n'
-            ' *  Copyright 2004 The WebRTC Project Authors. All rights '
-            'reserved.\n'
-            ' *\n'
-            ' *  Use of this source code is governed by a BSD-style license\n'
-            ' *  that can be found in the LICENSE file in the root of the '
-            'source\n'
-            ' *  tree. An additional intellectual property rights grant can be '
-            'found\n'
-            ' *  in the file PATENTS.  All contributing project authors may\n'
-            ' *  be found in the AUTHORS file in the root of the source tree.\n'
-            ' */\n\n'
-            '#ifndef RTC_BASE_SSL_ROOTS_H_\n'
-            '#define RTC_BASE_SSL_ROOTS_H_\n\n'
-            '// This file is the root certificates in C form that are needed to'
-            ' connect to\n// Google.\n\n'
-            '// It was generated with the following command line:\n'
-            '// > python tools_webrtc/sslroots/generate_sslroots.py'
-            '\n//    https://pki.goog/roots.pem\n\n'
-            '// clang-format off\n'
-            '// Don\'t bother formatting generated code,\n'
-            '// also it would breaks subject/issuer lines.\n\n')
-  return output
+    output = (
+        '/*\n'
+        ' *  Copyright 2004 The WebRTC Project Authors. All rights '
+        'reserved.\n'
+        ' *\n'
+        ' *  Use of this source code is governed by a BSD-style license\n'
+        ' *  that can be found in the LICENSE file in the root of the '
+        'source\n'
+        ' *  tree. An additional intellectual property rights grant can be '
+        'found\n'
+        ' *  in the file PATENTS.  All contributing project authors may\n'
+        ' *  be found in the AUTHORS file in the root of the source tree.\n'
+        ' */\n\n'
+        '#ifndef RTC_BASE_SSL_ROOTS_H_\n'
+        '#define RTC_BASE_SSL_ROOTS_H_\n\n'
+        '// This file is the root certificates in C form that are needed to'
+        ' connect to\n// Google.\n\n'
+        '// It was generated with the following command line:\n'
+        '// > python tools_webrtc/sslroots/generate_sslroots.py'
+        '\n//    https://pki.goog/roots.pem\n\n'
+        '// clang-format off\n'
+        '// Don\'t bother formatting generated code,\n'
+        '// also it would breaks subject/issuer lines.\n\n')
+    return output
+
 
 def _CreateOutputFooter():
-  output = ('// clang-format on\n\n'
-            '#endif  // RTC_BASE_SSL_ROOTS_H_\n')
-  return output
+    output = ('// clang-format on\n\n' '#endif  // RTC_BASE_SSL_ROOTS_H_\n')
+    return output
+
 
 def _CreateArraySectionHeader(type_name, type_type, options):
-  output = ('const %s kSSLCert%sList[] = {\n') %(type_type, type_name)
-  _PrintOutput(output, options)
-  return output
+    output = ('const %s kSSLCert%sList[] = {\n') % (type_type, type_name)
+    _PrintOutput(output, options)
+    return output
 
 
 def _AddLabelToArray(label, type_name):
-  return ' %s_%s,\n' %(label, type_name)
+    return ' %s_%s,\n' % (label, type_name)
 
 
 def _CreateArraySectionFooter():
-  return '};\n\n'
+    return '};\n\n'
 
 
 def _SafeName(original_file_name):
-  bad_chars = ' -./\\()áéíőú'
-  replacement_chars = ''
-  for _ in bad_chars:
-    replacement_chars += '_'
-  translation_table = string.maketrans(bad_chars, replacement_chars)
-  return original_file_name.translate(translation_table)
+    bad_chars = ' -./\\()áéíőú'
+    replacement_chars = ''
+    for _ in bad_chars:
+        replacement_chars += '_'
+    translation_table = string.maketrans(bad_chars, replacement_chars)
+    return original_file_name.translate(translation_table)
 
 
 def _PrintOutput(output, options):
-  if options.verbose:
-    print output
+    if options.verbose:
+        print output
+
 
 if __name__ == '__main__':
-  main()
+    main()