import libyuv at hash 38d37a5 from https://chromium.googlesource.com/libyuv/libyuv/

libs/libyuv/sync_chromium.py

@@ -0,0 +1,156 @@
+#!/usr/bin/env python
+# Copyright 2014 The LibYuv Project Authors. All rights reserved.
+#
+# Use of this source code is governed by a BSD-style license
+# that can be found in the LICENSE file in the root of the source
+# tree. An additional intellectual property rights grant can be found
+# in the file PATENTS. All contributing project authors may
+# be found in the AUTHORS file in the root of the source tree.
+
+"""Script to download a Chromium checkout into the workspace.
+
+The script downloads a full Chromium Git clone and its DEPS.
+
+The following environment variable can be used to alter the behavior:
+* CHROMIUM_NO_HISTORY - If set to 1, a Git checkout with no history will be
+  downloaded. This is consumes less bandwidth and disk space but is known to be
+  slower in general if you have a high-speed connection.
+
+After a successful sync has completed, a .last_sync_chromium file is written to
+the chromium directory. While it exists, no more gclient sync operations will be
+performed until the --target-revision changes or the SCRIPT_VERSION constant is
+incremented. The file can be removed manually to force a new sync.
+"""
+
+import argparse
+import os
+import subprocess
+import sys
+
+# Bump this whenever the algorithm changes and you need bots/devs to re-sync,
+# ignoring the .last_sync_chromium file
+SCRIPT_VERSION = 4
+
+ROOT_DIR = os.path.dirname(os.path.abspath(__file__))
+CHROMIUM_NO_HISTORY = 'CHROMIUM_NO_HISTORY'
+
+def _parse_gclient_dict():
+  gclient_dict = {}
+  try:
+    main_gclient = os.path.join(os.path.dirname(ROOT_DIR), '.gclient')
+    with open(main_gclient, 'rb') as deps_content:
+      exec(deps_content, gclient_dict)
+  except Exception as e:
+    print >> sys.stderr, 'error while parsing .gclient:', e
+  return gclient_dict
+
+
+def get_cache_dir():
+  return _parse_gclient_dict().get('cache_dir')
+
+
+def get_target_os_list():
+  return ','.join(_parse_gclient_dict().get('target_os', []))
+
+
+def main():
+  CR_DIR = os.path.join(ROOT_DIR, 'chromium')
+
+  p = argparse.ArgumentParser()
+  p.add_argument('--target-revision', required=True,
+                 help='The target chromium git revision [REQUIRED]')
+  p.add_argument('--chromium-dir', default=CR_DIR,
+                 help=('The path to the chromium directory to sync '
+                       '(default: %(default)r)'))
+  opts = p.parse_args()
+  opts.chromium_dir = os.path.abspath(opts.chromium_dir)
+
+  target_os_list = get_target_os_list()
+
+  # Do a quick check to see if we were successful last time to make runhooks
+  # sooper fast.
+  flag_file = os.path.join(opts.chromium_dir, '.last_sync_chromium')
+  flag_file_content = '\n'.join([
+    str(SCRIPT_VERSION),
+    opts.target_revision,
+    repr(target_os_list),
+  ])
+  if (os.path.exists(os.path.join(opts.chromium_dir, 'src')) and
+      os.path.exists(flag_file)):
+    with open(flag_file, 'r') as f:
+      if f.read() == flag_file_content:
+        print 'Chromium already up to date: ', opts.target_revision
+        return 0
+    os.unlink(flag_file)
+
+  env = os.environ.copy()
+
+  # Avoid downloading NaCl toolchain as part of the Chromium hooks.
+  env.setdefault('GYP_DEFINES', '')
+  env['GYP_DEFINES'] += ' disable_nacl=1'
+  env['GYP_CHROMIUM_NO_ACTION'] = '1'
+  gclient_cmd = 'gclient.bat' if sys.platform.startswith('win') else 'gclient'
+  args = [
+      gclient_cmd, 'sync', '--force', '--revision', 'src@'+opts.target_revision
+  ]
+
+  if os.environ.get('CHROME_HEADLESS') == '1':
+    # Running on a buildbot.
+    args.append('-vvv')
+
+    if sys.platform.startswith('win'):
+      cache_path = os.path.join(os.path.splitdrive(ROOT_DIR)[0] + os.path.sep,
+                                'b', 'git-cache')
+    else:
+      cache_path = '/b/git-cache'
+  else:
+    # Support developers setting the cache_dir in .gclient.
+    cache_path = get_cache_dir()
+
+  # Allow for users with poor internet connections to download a Git clone
+  # without history (saves several gigs but is generally slower and doesn't work
+  # with the Git cache).
+  if os.environ.get(CHROMIUM_NO_HISTORY) == '1':
+    if cache_path:
+      print >> sys.stderr, (
+          'You cannot use "no-history" mode for syncing Chrome (i.e. set the '
+          '%s environment variable to 1) when you have cache_dir configured in '
+          'your .gclient.' % CHROMIUM_NO_HISTORY)
+      return 1
+    args.append('--no-history')
+    gclient_entries_file = os.path.join(opts.chromium_dir, '.gclient_entries')
+  else:
+    # Write a temporary .gclient file that has the cache_dir variable added.
+    gclientfile = os.path.join(opts.chromium_dir, '.gclient')
+    with open(gclientfile, 'rb') as spec:
+      spec = spec.read().splitlines()
+      spec[-1] = 'cache_dir = %r' % (cache_path,)
+    with open(gclientfile + '.tmp', 'wb') as f:
+      f.write('\n'.join(spec))
+
+    args += [
+      '--gclientfile', '.gclient.tmp',
+      '--delete_unversioned_trees', '--reset', '--upstream'
+    ]
+    gclient_entries_file = os.path.join(opts.chromium_dir,
+                                        '.gclient.tmp_entries')
+
+  # To avoid gclient sync problems when DEPS entries have been removed we must
+  # wipe the gclient's entries file that contains cached URLs for all DEPS.
+  if os.path.exists(gclient_entries_file):
+    os.unlink(gclient_entries_file)
+
+  if target_os_list:
+    args += ['--deps=' + target_os_list]
+
+  print 'Running "%s" in %s' % (' '.join(args), opts.chromium_dir)
+  ret = subprocess.call(args, cwd=opts.chromium_dir, env=env)
+  if ret == 0:
+    with open(flag_file, 'wb') as f:
+      f.write(flag_file_content)
+
+  return ret
+
+
+if __name__ == '__main__':
+  sys.exit(main())