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_upstream_diff.py b/git_upstream_diff.py
index 4fd9da5..8074e38 100755
--- a/git_upstream_diff.py
+++ b/git_upstream_diff.py
@@ -10,53 +10,58 @@
 
 import git_common as git
 
+
 def main(args):
-  default_args = git.get_config_list('depot-tools.upstream-diff.default-args')
-  args = default_args + args
+    default_args = git.get_config_list('depot-tools.upstream-diff.default-args')
+    args = default_args + args
 
-  current_branch = git.current_branch()
+    current_branch = git.current_branch()
 
-  parser = argparse.ArgumentParser()
-  parser.add_argument('--wordwise', action='store_true', default=False,
-                      help=(
-                        'Print a colorized wordwise diff '
-                        'instead of line-wise diff'))
-  parser.add_argument('--branch', default=current_branch,
-                      help='Show changes from a different branch. Passing '
-                           '"HEAD" is the same as omitting this option (it '
-                           'diffs against the current branch)')
-  opts, extra_args = parser.parse_known_args(args)
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--wordwise',
+                        action='store_true',
+                        default=False,
+                        help=('Print a colorized wordwise diff '
+                              'instead of line-wise diff'))
+    parser.add_argument('--branch',
+                        default=current_branch,
+                        help='Show changes from a different branch. Passing '
+                        '"HEAD" is the same as omitting this option (it '
+                        'diffs against the current branch)')
+    opts, extra_args = parser.parse_known_args(args)
 
-  if opts.branch == 'HEAD':
-    opts.branch = current_branch
+    if opts.branch == 'HEAD':
+        opts.branch = current_branch
 
-  if not opts.branch or opts.branch == 'HEAD':
-    print('fatal: Cannot perform git-upstream-diff while not on a branch')
-    return 1
+    if not opts.branch or opts.branch == 'HEAD':
+        print('fatal: Cannot perform git-upstream-diff while not on a branch')
+        return 1
 
-  par = git.upstream(opts.branch)
-  if not par:
-    print('fatal: No upstream configured for branch \'%s\'' % opts.branch)
-    return 1
+    par = git.upstream(opts.branch)
+    if not par:
+        print('fatal: No upstream configured for branch \'%s\'' % opts.branch)
+        return 1
 
-  cmd = [git.GIT_EXE, '-c', 'core.quotePath=false',
-         'diff', '--patience', '-C', '-C']
-  if opts.wordwise:
-    cmd += ['--word-diff=color', r'--word-diff-regex=(\w+|[^[:space:]])']
-  cmd += [git.get_or_create_merge_base(opts.branch, par)]
-  # Only specify the end commit if it is not the current branch, this lets the
-  # diff include uncommitted changes when diffing the current branch.
-  if opts.branch != current_branch:
-    cmd += [opts.branch]
+    cmd = [
+        git.GIT_EXE, '-c', 'core.quotePath=false', 'diff', '--patience', '-C',
+        '-C'
+    ]
+    if opts.wordwise:
+        cmd += ['--word-diff=color', r'--word-diff-regex=(\w+|[^[:space:]])']
+    cmd += [git.get_or_create_merge_base(opts.branch, par)]
+    # Only specify the end commit if it is not the current branch, this lets the
+    # diff include uncommitted changes when diffing the current branch.
+    if opts.branch != current_branch:
+        cmd += [opts.branch]
 
-  cmd += extra_args
+    cmd += extra_args
 
-  return subprocess2.check_call(cmd)
+    return subprocess2.check_call(cmd)
 
 
 if __name__ == '__main__':
-  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)