Fix some license headers in tools/

tools/code_coverage/croc.css

Index: tools/code_coverage/croc.css
diff --git a/tools/code_coverage/croc.css b/tools/code_coverage/croc.css
index c7567002bbd5feccb8d8b1f2d9198a332fa06458..071822dafad5e020a2db57fc42d60c8c0a65b36a 100644
--- a/tools/code_coverage/croc.css
+++ b/tools/code_coverage/croc.css
@@ -1,33 +1,11 @@
 /*
+ * Copyright (c) 2012 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.
+ */
+
+/*
  * croc.css - styles for croc HTML output
- * Copyright 2009, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *        * Redistributions of source code must retain the above copyright
- *     notice, this list of conditions and the following disclaimer.
- *        * Redistributions in binary form must reproduce the above
- *     copyright notice, this list of conditions and the following disclaimer
- *     in the documentation and/or other materials provided with the
- *     distribution.
- *        * Neither the name of Google Inc. nor the names of its
- *     contributors may be used to endorse or promote products derived from
- *     this software without specific prior written permission.
- *
- *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- *     "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- *     LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- *     A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- *     OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- *     LIMITED TO, PROCUREMENT  OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- *     DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- *     THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- *     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- *     OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 body {