switch to 4 space indent

Leave the recipes/ code at 2 space to match the rest of the recipes
project in other repos.

Reformatted using:
files=( $(
	git ls-tree -r --name-only HEAD | \
		grep -Ev -e '^(third_party|recipes)/' | \
		grep '\.py$';
	git grep -l '#!/usr/bin/env.*python' | grep -v '\.py$'
) )
parallel ./yapf -i -- "${files[@]}"
~/chromiumos/chromite/contrib/reflow_overlong_comments "${files[@]}"

The files that still had strings that were too long were manually
reformatted because they were easy and only a few issues.
autoninja.py
clang_format.py
download_from_google_storage.py
fix_encoding.py
gclient_utils.py
git_cache.py
git_common.py
git_map_branches.py
git_reparent_branch.py
gn.py
my_activity.py
owners_finder.py
presubmit_canned_checks.py
reclient_helper.py
reclientreport.py
roll_dep.py
rustfmt.py
siso.py
split_cl.py
subcommand.py
subprocess2.py
swift_format.py
upload_to_google_storage.py

These files still had lines (strings) that were too long, so the pylint
warnings were suppressed with a TODO.
auth.py
gclient.py
gclient_eval.py
gclient_paths.py
gclient_scm.py
gerrit_util.py
git_cl.py
presubmit_canned_checks.py
presubmit_support.py
scm.py

Change-Id: Ia6535c4f2c48d46b589ec1e791dde6c6b2ea858f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/4836379
Commit-Queue: Josip Sokcevic <sokcevic@chromium.org>
Auto-Submit: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Josip Sokcevic <sokcevic@chromium.org>
diff --git a/git_rename_branch.py b/git_rename_branch.py
index 95094e8..a600eb2 100755
--- a/git_rename_branch.py
+++ b/git_rename_branch.py
@@ -2,7 +2,6 @@
 # Copyright 2014 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.
-
 """Rename the current branch while maintaining correct dependencies."""
 
 import argparse
@@ -13,43 +12,47 @@
 from git_common import current_branch, run, set_branch_config, branch_config
 from git_common import branch_config_map
 
+
 def main(args):
-  current = current_branch()
-  if current == 'HEAD':
-    current = None
-  old_name_help = 'The old branch to rename.'
-  if current:
-    old_name_help += ' (default %(default)r)'
+    current = current_branch()
+    if current == 'HEAD':
+        current = None
+    old_name_help = 'The old branch to rename.'
+    if current:
+        old_name_help += ' (default %(default)r)'
 
-  parser = argparse.ArgumentParser()
-  parser.add_argument('old_name', nargs=('?' if current else 1),
-                      help=old_name_help, default=current)
-  parser.add_argument('new_name', help='The new branch name.')
+    parser = argparse.ArgumentParser()
+    parser.add_argument('old_name',
+                        nargs=('?' if current else 1),
+                        help=old_name_help,
+                        default=current)
+    parser.add_argument('new_name', help='The new branch name.')
 
-  opts = parser.parse_args(args)
+    opts = parser.parse_args(args)
 
-  # when nargs=1, we get a list :(
-  if isinstance(opts.old_name, list):
-    opts.old_name = opts.old_name[0]
+    # when nargs=1, we get a list :(
+    if isinstance(opts.old_name, list):
+        opts.old_name = opts.old_name[0]
 
-  try:
-    run('branch', '-m', opts.old_name, opts.new_name)
+    try:
+        run('branch', '-m', opts.old_name, opts.new_name)
 
-    # update the downstreams
-    for branch, merge in branch_config_map('merge').items():
-      if merge == 'refs/heads/' + opts.old_name:
-        # Only care about local branches
-        if branch_config(branch, 'remote') == '.':
-          set_branch_config(branch, 'merge', 'refs/heads/' + opts.new_name)
-  except subprocess2.CalledProcessError as cpe:
-    sys.stderr.write(cpe.stderr.decode('utf-8', 'replace'))
-    return 1
-  return 0
+        # update the downstreams
+        for branch, merge in branch_config_map('merge').items():
+            if merge == 'refs/heads/' + opts.old_name:
+                # Only care about local branches
+                if branch_config(branch, 'remote') == '.':
+                    set_branch_config(branch, 'merge',
+                                      'refs/heads/' + opts.new_name)
+    except subprocess2.CalledProcessError as cpe:
+        sys.stderr.write(cpe.stderr.decode('utf-8', 'replace'))
+        return 1
+    return 0
 
 
 if __name__ == '__main__':  # pragma: no cover
-  try:
-    sys.exit(main(sys.argv[1:]))
-  except KeyboardInterrupt:
-    sys.stderr.write('interrupted\n')
-    sys.exit(1)
+    try:
+        sys.exit(main(sys.argv[1:]))
+    except KeyboardInterrupt:
+        sys.stderr.write('interrupted\n')
+        sys.exit(1)