Add license information to our shell scripts.

webkit/tools/layout_tests/run_webkit_tests.sh

Index: webkit/tools/layout_tests/run_webkit_tests.sh
diff --git a/webkit/tools/layout_tests/run_webkit_tests.sh b/webkit/tools/layout_tests/run_webkit_tests.sh
index 3cfdac965807f452ba591df1da27eb3346dfb103..ba6b807da49669f9b580f3e5415f3bfbc41e7912 100755
--- a/webkit/tools/layout_tests/run_webkit_tests.sh
+++ b/webkit/tools/layout_tests/run_webkit_tests.sh
@@ -1,5 +1,9 @@
 #!/bin/sh
 
+# Copyright (c) 2009 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.
+
 exec_dir=$(dirname $0)
 
 if [ "$OSTYPE" = "cygwin" ]; then