Update license boilerplate text in source code files

Normally we don't do this, but enough changes have accumulated that
we're doing a tree-wide one-off update of the name & style.

BUG=chromium:1098010
TEST=`repo upload` works

Change-Id: Ia851b3eaeabac5446f043e1fd72bdcb286b74b3c
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/3882108
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Jesse McGuire <jessemcguire@google.com>
diff --git a/builder_test.py b/builder_test.py
index a34f7c8..39944fd 100755
--- a/builder_test.py
+++ b/builder_test.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python2
 # -*- coding: utf-8 -*-
-# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+# Copyright 2010 The ChromiumOS Authors
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.