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_retry.py b/git_retry.py
index 1ae63f8..f8db8b5 100755
--- a/git_retry.py
+++ b/git_retry.py
@@ -2,8 +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.
-
-
 """Generic retry wrapper for Git operations.
 
 This is largely DEPRECATED in favor of the Infra Git wrapper:
@@ -22,63 +20,62 @@
 
 
 class TeeThread(threading.Thread):
+    def __init__(self, fd, out_fd, name):
+        super(TeeThread, self).__init__(name='git-retry.tee.%s' % (name, ))
+        self.data = None
+        self.fd = fd
+        self.out_fd = out_fd
 
-  def __init__(self, fd, out_fd, name):
-    super(TeeThread, self).__init__(name='git-retry.tee.%s' % (name,))
-    self.data = None
-    self.fd = fd
-    self.out_fd = out_fd
-
-  def run(self):
-    chunks = []
-    for line in self.fd:
-      line = line.decode('utf-8')
-      chunks.append(line)
-      self.out_fd.write(line)
-    self.data = ''.join(chunks)
+    def run(self):
+        chunks = []
+        for line in self.fd:
+            line = line.decode('utf-8')
+            chunks.append(line)
+            self.out_fd.write(line)
+        self.data = ''.join(chunks)
 
 
 class GitRetry(object):
 
-  logger = logging.getLogger('git-retry')
-  DEFAULT_DELAY_SECS = 3.0
-  DEFAULT_RETRY_COUNT = 5
+    logger = logging.getLogger('git-retry')
+    DEFAULT_DELAY_SECS = 3.0
+    DEFAULT_RETRY_COUNT = 5
 
-  def __init__(self, retry_count=None, delay=None, delay_factor=None):
-    self.retry_count = retry_count or self.DEFAULT_RETRY_COUNT
-    self.delay = max(delay, 0) if delay else 0
-    self.delay_factor = max(delay_factor, 0) if delay_factor else 0
+    def __init__(self, retry_count=None, delay=None, delay_factor=None):
+        self.retry_count = retry_count or self.DEFAULT_RETRY_COUNT
+        self.delay = max(delay, 0) if delay else 0
+        self.delay_factor = max(delay_factor, 0) if delay_factor else 0
 
-  def shouldRetry(self, stderr):
-    m = GIT_TRANSIENT_ERRORS_RE.search(stderr)
-    if not m:
-      return False
-    self.logger.info("Encountered known transient error: [%s]",
-                     stderr[m.start(): m.end()])
-    return True
+    def shouldRetry(self, stderr):
+        m = GIT_TRANSIENT_ERRORS_RE.search(stderr)
+        if not m:
+            return False
+        self.logger.info("Encountered known transient error: [%s]",
+                         stderr[m.start():m.end()])
+        return True
 
-  @staticmethod
-  def execute(*args):
-    args = (GIT_EXE,) + args
-    proc = subprocess.Popen(
-        args,
-        stderr=subprocess.PIPE,
-    )
-    stderr_tee = TeeThread(proc.stderr, sys.stderr, 'stderr')
+    @staticmethod
+    def execute(*args):
+        args = (GIT_EXE, ) + args
+        proc = subprocess.Popen(
+            args,
+            stderr=subprocess.PIPE,
+        )
+        stderr_tee = TeeThread(proc.stderr, sys.stderr, 'stderr')
 
-    # Start our process. Collect/tee 'stdout' and 'stderr'.
-    stderr_tee.start()
-    try:
-      proc.wait()
-    except KeyboardInterrupt:
-      proc.kill()
-      raise
-    finally:
-      stderr_tee.join()
-    return proc.returncode, None, stderr_tee.data
+        # Start our process. Collect/tee 'stdout' and 'stderr'.
+        stderr_tee.start()
+        try:
+            proc.wait()
+        except KeyboardInterrupt:
+            proc.kill()
+            raise
+        finally:
+            stderr_tee.join()
+        return proc.returncode, None, stderr_tee.data
 
-  def computeDelay(self, iteration):
-    """Returns: the delay (in seconds) for a given iteration
+    def computeDelay(self, iteration):
+        """Returns: the delay (in seconds) for a given iteration
 
     The first iteration has a delay of '0'.
 
@@ -86,97 +83,113 @@
       iteration: (int) The iteration index (starting with zero as the first
           iteration)
     """
-    if (not self.delay) or (iteration == 0):
-      return 0
-    if self.delay_factor == 0:
-      # Linear delay
-      return iteration * self.delay
-    # Exponential delay
-    return (self.delay_factor ** (iteration - 1)) * self.delay
+        if (not self.delay) or (iteration == 0):
+            return 0
+        if self.delay_factor == 0:
+            # Linear delay
+            return iteration * self.delay
+        # Exponential delay
+        return (self.delay_factor**(iteration - 1)) * self.delay
 
-  def __call__(self, *args):
-    returncode = 0
-    for i in range(self.retry_count):
-      # If the previous run failed and a delay is configured, delay before the
-      # next run.
-      delay = self.computeDelay(i)
-      if delay > 0:
-        self.logger.info("Delaying for [%s second(s)] until next retry", delay)
-        time.sleep(delay)
+    def __call__(self, *args):
+        returncode = 0
+        for i in range(self.retry_count):
+            # If the previous run failed and a delay is configured, delay before
+            # the next run.
+            delay = self.computeDelay(i)
+            if delay > 0:
+                self.logger.info("Delaying for [%s second(s)] until next retry",
+                                 delay)
+                time.sleep(delay)
 
-      self.logger.debug("Executing subprocess (%d/%d) with arguments: %s",
-                        (i+1), self.retry_count, args)
-      returncode, _, stderr = self.execute(*args)
+            self.logger.debug("Executing subprocess (%d/%d) with arguments: %s",
+                              (i + 1), self.retry_count, args)
+            returncode, _, stderr = self.execute(*args)
 
-      self.logger.debug("Process terminated with return code: %d", returncode)
-      if returncode == 0:
-        break
+            self.logger.debug("Process terminated with return code: %d",
+                              returncode)
+            if returncode == 0:
+                break
 
-      if not self.shouldRetry(stderr):
-        self.logger.error("Process failure was not known to be transient; "
-                          "terminating with return code %d", returncode)
-        break
-    return returncode
+            if not self.shouldRetry(stderr):
+                self.logger.error(
+                    "Process failure was not known to be transient; "
+                    "terminating with return code %d", returncode)
+                break
+        return returncode
 
 
 def main(args):
-  # If we're using the Infra Git wrapper, do nothing here.
-  # https://chromium.googlesource.com/infra/infra/+/HEAD/go/src/infra/tools/git
-  if 'INFRA_GIT_WRAPPER' in os.environ:
-    # Remove Git's execution path from PATH so that our call-through re-invokes
-    # the Git wrapper.
-    # See crbug.com/721450
-    env = os.environ.copy()
-    git_exec = subprocess.check_output([GIT_EXE, '--exec-path']).strip()
-    env['PATH'] = os.pathsep.join([
-      elem for elem in env.get('PATH', '').split(os.pathsep)
-      if elem != git_exec])
-    return subprocess.call([GIT_EXE] + args, env=env)
+    # If we're using the Infra Git wrapper, do nothing here.
+    # https://chromium.googlesource.com/infra/infra/+/HEAD/go/src/infra/tools/git
+    if 'INFRA_GIT_WRAPPER' in os.environ:
+        # Remove Git's execution path from PATH so that our call-through
+        # re-invokes the Git wrapper. See crbug.com/721450
+        env = os.environ.copy()
+        git_exec = subprocess.check_output([GIT_EXE, '--exec-path']).strip()
+        env['PATH'] = os.pathsep.join([
+            elem for elem in env.get('PATH', '').split(os.pathsep)
+            if elem != git_exec
+        ])
+        return subprocess.call([GIT_EXE] + args, env=env)
 
-  parser = optparse.OptionParser()
-  parser.disable_interspersed_args()
-  parser.add_option('-v', '--verbose',
-                    action='count', default=0,
-                    help="Increase verbosity; can be specified multiple times")
-  parser.add_option('-c', '--retry-count', metavar='COUNT',
-                    type=int, default=GitRetry.DEFAULT_RETRY_COUNT,
-                    help="Number of times to retry (default=%default)")
-  parser.add_option('-d', '--delay', metavar='SECONDS',
-                    type=float, default=GitRetry.DEFAULT_DELAY_SECS,
-                    help="Specifies the amount of time (in seconds) to wait "
-                         "between successive retries (default=%default). This "
-                         "can be zero.")
-  parser.add_option('-D', '--delay-factor', metavar='FACTOR',
-                    type=int, default=2,
-                    help="The exponential factor to apply to delays in between "
-                         "successive failures (default=%default). If this is "
-                         "zero, delays will increase linearly. Set this to "
-                         "one to have a constant (non-increasing) delay.")
+    parser = optparse.OptionParser()
+    parser.disable_interspersed_args()
+    parser.add_option(
+        '-v',
+        '--verbose',
+        action='count',
+        default=0,
+        help="Increase verbosity; can be specified multiple times")
+    parser.add_option('-c',
+                      '--retry-count',
+                      metavar='COUNT',
+                      type=int,
+                      default=GitRetry.DEFAULT_RETRY_COUNT,
+                      help="Number of times to retry (default=%default)")
+    parser.add_option('-d',
+                      '--delay',
+                      metavar='SECONDS',
+                      type=float,
+                      default=GitRetry.DEFAULT_DELAY_SECS,
+                      help="Specifies the amount of time (in seconds) to wait "
+                      "between successive retries (default=%default). This "
+                      "can be zero.")
+    parser.add_option(
+        '-D',
+        '--delay-factor',
+        metavar='FACTOR',
+        type=int,
+        default=2,
+        help="The exponential factor to apply to delays in between "
+        "successive failures (default=%default). If this is "
+        "zero, delays will increase linearly. Set this to "
+        "one to have a constant (non-increasing) delay.")
 
-  opts, args = parser.parse_args(args)
+    opts, args = parser.parse_args(args)
 
-  # Configure logging verbosity
-  if opts.verbose == 0:
-    logging.getLogger().setLevel(logging.WARNING)
-  elif opts.verbose == 1:
-    logging.getLogger().setLevel(logging.INFO)
-  else:
-    logging.getLogger().setLevel(logging.DEBUG)
+    # Configure logging verbosity
+    if opts.verbose == 0:
+        logging.getLogger().setLevel(logging.WARNING)
+    elif opts.verbose == 1:
+        logging.getLogger().setLevel(logging.INFO)
+    else:
+        logging.getLogger().setLevel(logging.DEBUG)
 
-  # Execute retries
-  retry = GitRetry(
-      retry_count=opts.retry_count,
-      delay=opts.delay,
-      delay_factor=opts.delay_factor,
-  )
-  return retry(*args)
+    # Execute retries
+    retry = GitRetry(
+        retry_count=opts.retry_count,
+        delay=opts.delay,
+        delay_factor=opts.delay_factor,
+    )
+    return retry(*args)
 
 
 if __name__ == '__main__':
-  logging.basicConfig()
-  logging.getLogger().setLevel(logging.WARNING)
-  try:
-    sys.exit(main(sys.argv[2:]))
-  except KeyboardInterrupt:
-    sys.stderr.write('interrupted\n')
-    sys.exit(1)
+    logging.basicConfig()
+    logging.getLogger().setLevel(logging.WARNING)
+    try:
+        sys.exit(main(sys.argv[2:]))
+    except KeyboardInterrupt:
+        sys.stderr.write('interrupted\n')
+        sys.exit(1)