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/clang_format.py b/clang_format.py
index 4e7b1ba..bfe3b4b 100755
--- a/clang_format.py
+++ b/clang_format.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.
-
 """Redirects to the version of clang-format checked into the Chrome tree.
 
 clang-format binaries are pulled down from Google Cloud Storage whenever you
@@ -18,77 +17,81 @@
 
 
 class NotFoundError(Exception):
-  """A file could not be found."""
-  def __init__(self, e):
-    Exception.__init__(self,
-        'Problem while looking for clang-format in Chromium source tree:\n'
-        '%s' % e)
+    """A file could not be found."""
+    def __init__(self, e):
+        Exception.__init__(
+            self,
+            'Problem while looking for clang-format in Chromium source tree:\n'
+            '%s' % e)
 
 
 def FindClangFormatToolInChromiumTree():
-  """Return a path to the clang-format executable, or die trying."""
-  primary_solution_path = gclient_paths.GetPrimarySolutionPath()
-  if primary_solution_path:
-    bin_path = os.path.join(primary_solution_path, 'third_party',
-                            'clang-format',
-                            'clang-format' + gclient_paths.GetExeSuffix())
-    if os.path.exists(bin_path):
-      return bin_path
+    """Return a path to the clang-format executable, or die trying."""
+    primary_solution_path = gclient_paths.GetPrimarySolutionPath()
+    if primary_solution_path:
+        bin_path = os.path.join(primary_solution_path, 'third_party',
+                                'clang-format',
+                                'clang-format' + gclient_paths.GetExeSuffix())
+        if os.path.exists(bin_path):
+            return bin_path
 
-  bin_path = gclient_paths.GetBuildtoolsPlatformBinaryPath()
-  if not bin_path:
-    raise NotFoundError(
-        'Could not find checkout in any parent of the current path.\n'
-        'Set CHROMIUM_BUILDTOOLS_PATH to use outside of a chromium checkout.')
+    bin_path = gclient_paths.GetBuildtoolsPlatformBinaryPath()
+    if not bin_path:
+        raise NotFoundError(
+            'Could not find checkout in any parent of the current path.\n'
+            'Set CHROMIUM_BUILDTOOLS_PATH to use outside of a chromium '
+            'checkout.')
 
-  tool_path = os.path.join(bin_path,
-                           'clang-format' + gclient_paths.GetExeSuffix())
-  if not os.path.exists(tool_path):
-    raise NotFoundError('File does not exist: %s' % tool_path)
-  return tool_path
+    tool_path = os.path.join(bin_path,
+                             'clang-format' + gclient_paths.GetExeSuffix())
+    if not os.path.exists(tool_path):
+        raise NotFoundError('File does not exist: %s' % tool_path)
+    return tool_path
 
 
 def FindClangFormatScriptInChromiumTree(script_name):
-  """Return a path to a clang-format helper script, or die trying."""
-  primary_solution_path = gclient_paths.GetPrimarySolutionPath()
-  if primary_solution_path:
-    script_path = os.path.join(primary_solution_path, 'third_party',
-                               'clang-format', 'script', script_name)
-    if os.path.exists(script_path):
-      return script_path
+    """Return a path to a clang-format helper script, or die trying."""
+    primary_solution_path = gclient_paths.GetPrimarySolutionPath()
+    if primary_solution_path:
+        script_path = os.path.join(primary_solution_path, 'third_party',
+                                   'clang-format', 'script', script_name)
+        if os.path.exists(script_path):
+            return script_path
 
-  tools_path = gclient_paths.GetBuildtoolsPath()
-  if not tools_path:
-    raise NotFoundError(
-        'Could not find checkout in any parent of the current path.\n',
-        'Set CHROMIUM_BUILDTOOLS_PATH to use outside of a chromium checkout.')
+    tools_path = gclient_paths.GetBuildtoolsPath()
+    if not tools_path:
+        raise NotFoundError(
+            'Could not find checkout in any parent of the current path.\n',
+            'Set CHROMIUM_BUILDTOOLS_PATH to use outside of a chromium '
+            'checkout.')
 
-  script_path = os.path.join(tools_path, 'clang_format', 'script', script_name)
-  if not os.path.exists(script_path):
-    raise NotFoundError('File does not exist: %s' % script_path)
-  return script_path
+    script_path = os.path.join(tools_path, 'clang_format', 'script',
+                               script_name)
+    if not os.path.exists(script_path):
+        raise NotFoundError('File does not exist: %s' % script_path)
+    return script_path
 
 
 def main(args):
-  try:
-    tool = FindClangFormatToolInChromiumTree()
-  except NotFoundError as e:
-    sys.stderr.write("%s\n" % str(e))
-    return 1
+    try:
+        tool = FindClangFormatToolInChromiumTree()
+    except NotFoundError as e:
+        sys.stderr.write("%s\n" % str(e))
+        return 1
 
-  # Add some visibility to --help showing where the tool lives, since this
-  # redirection can be a little opaque.
-  help_syntax = ('-h', '--help', '-help', '-help-list', '--help-list')
-  if any(match in args for match in help_syntax):
-    print(
-        '\nDepot tools redirects you to the clang-format at:\n    %s\n' % tool)
+    # Add some visibility to --help showing where the tool lives, since this
+    # redirection can be a little opaque.
+    help_syntax = ('-h', '--help', '-help', '-help-list', '--help-list')
+    if any(match in args for match in help_syntax):
+        print('\nDepot tools redirects you to the clang-format at:\n    %s\n' %
+              tool)
 
-  return subprocess.call([tool] + args)
+    return subprocess.call([tool] + args)
 
 
 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)