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_reparent_branch.py b/git_reparent_branch.py
index e84fdd7..3366a3e 100755
--- a/git_reparent_branch.py
+++ b/git_reparent_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.
-
 """Change the upstream of the current branch."""
 
 import argparse
@@ -17,86 +16,90 @@
 import git_rebase_update
 import metrics
 
+
 @metrics.collector.collect_metrics('git reparent-branch')
 def main(args):
-  root_ref = root()
+    root_ref = root()
 
-  parser = argparse.ArgumentParser()
-  g = parser.add_mutually_exclusive_group()
-  g.add_argument('new_parent', nargs='?',
-                 help='New parent branch (or tag) to reparent to.')
-  g.add_argument('--root', action='store_true',
-                 help='Reparent to the configured root branch (%s).' % root_ref)
-  g.add_argument('--lkgr', action='store_true',
-                 help='Reparent to the lkgr tag.')
-  opts = parser.parse_args(args)
+    parser = argparse.ArgumentParser()
+    g = parser.add_mutually_exclusive_group()
+    g.add_argument('new_parent',
+                   nargs='?',
+                   help='New parent branch (or tag) to reparent to.')
+    g.add_argument('--root',
+                   action='store_true',
+                   help='Reparent to the configured root branch (%s).' %
+                   root_ref)
+    g.add_argument('--lkgr',
+                   action='store_true',
+                   help='Reparent to the lkgr tag.')
+    opts = parser.parse_args(args)
 
-  # TODO(iannucci): Allow specification of the branch-to-reparent
+    # TODO(iannucci): Allow specification of the branch-to-reparent
 
-  branch = current_branch()
+    branch = current_branch()
 
-  if opts.root:
-    new_parent = root_ref
-  elif opts.lkgr:
-    new_parent = 'lkgr'
-  else:
-    if not opts.new_parent:
-      parser.error('Must specify new parent somehow')
-    new_parent = opts.new_parent
-  cur_parent = upstream(branch)
+    if opts.root:
+        new_parent = root_ref
+    elif opts.lkgr:
+        new_parent = 'lkgr'
+    else:
+        if not opts.new_parent:
+            parser.error('Must specify new parent somehow')
+        new_parent = opts.new_parent
+    cur_parent = upstream(branch)
 
-  if branch == 'HEAD' or not branch:
-    parser.error('Must be on the branch you want to reparent')
-  if new_parent == cur_parent:
-    parser.error('Cannot reparent a branch to its existing parent')
+    if branch == 'HEAD' or not branch:
+        parser.error('Must be on the branch you want to reparent')
+    if new_parent == cur_parent:
+        parser.error('Cannot reparent a branch to its existing parent')
 
-  if not cur_parent:
-    msg = (
-      "Unable to determine %s@{upstream}.\n\nThis can happen if you didn't use "
-      "`git new-branch` to create the branch and haven't used "
-      "`git branch --set-upstream-to` to assign it one.\n\nPlease assign an "
-      "upstream branch and then run this command again."
-    )
-    print(msg % branch, file=sys.stderr)
-    return 1
+    if not cur_parent:
+        msg = (
+            "Unable to determine %s@{upstream}.\n\nThis can happen if you "
+            "didn't use `git new-branch` to create the branch and haven't used "
+            "`git branch --set-upstream-to` to assign it one.\n\nPlease assign "
+            "an upstream branch and then run this command again.")
+        print(msg % branch, file=sys.stderr)
+        return 1
 
-  mbase = get_or_create_merge_base(branch, cur_parent)
+    mbase = get_or_create_merge_base(branch, cur_parent)
 
-  all_tags = tags()
-  if cur_parent in all_tags:
-    cur_parent += ' [tag]'
+    all_tags = tags()
+    if cur_parent in all_tags:
+        cur_parent += ' [tag]'
 
-  try:
-    run('show-ref', new_parent)
-  except subprocess2.CalledProcessError:
-    print('fatal: invalid reference: %s' % new_parent, file=sys.stderr)
-    return 1
+    try:
+        run('show-ref', new_parent)
+    except subprocess2.CalledProcessError:
+        print('fatal: invalid reference: %s' % new_parent, file=sys.stderr)
+        return 1
 
-  if new_parent in all_tags:
-    print("Reparenting %s to track %s [tag] (was %s)" % (branch, new_parent,
-                                                         cur_parent))
-    set_branch_config(branch, 'remote', '.')
-    set_branch_config(branch, 'merge', new_parent)
-  else:
-    print("Reparenting %s to track %s (was %s)" % (branch, new_parent,
-                                                   cur_parent))
-    run('branch', '--set-upstream-to', new_parent, branch)
+    if new_parent in all_tags:
+        print("Reparenting %s to track %s [tag] (was %s)" %
+              (branch, new_parent, cur_parent))
+        set_branch_config(branch, 'remote', '.')
+        set_branch_config(branch, 'merge', new_parent)
+    else:
+        print("Reparenting %s to track %s (was %s)" %
+              (branch, new_parent, cur_parent))
+        run('branch', '--set-upstream-to', new_parent, branch)
 
-  manual_merge_base(branch, mbase, new_parent)
+    manual_merge_base(branch, mbase, new_parent)
 
-  # ONLY rebase-update the branch which moved (and dependants)
-  _, branch_tree = get_branch_tree()
-  branches = [branch]
-  for branch, parent in topo_iter(branch_tree):
-    if parent in branches:
-      branches.append(branch)
-  return git_rebase_update.main(['--no-fetch', '--keep-empty'] + branches)
+    # ONLY rebase-update the branch which moved (and dependants)
+    _, branch_tree = get_branch_tree()
+    branches = [branch]
+    for branch, parent in topo_iter(branch_tree):
+        if parent in branches:
+            branches.append(branch)
+    return git_rebase_update.main(['--no-fetch', '--keep-empty'] + branches)
 
 
 if __name__ == '__main__':  # pragma: no cover
-  try:
-    with metrics.collector.print_notice_and_exit():
-      sys.exit(main(sys.argv[1:]))
-  except KeyboardInterrupt:
-    sys.stderr.write('interrupted\n')
-    sys.exit(1)
+    try:
+        with metrics.collector.print_notice_and_exit():
+            sys.exit(main(sys.argv[1:]))
+    except KeyboardInterrupt:
+        sys.stderr.write('interrupted\n')
+        sys.exit(1)