Chromium license no longer has (c) in it for new files, make it optional.

BUG=None
TEST=Ran it on file with/without (c).

Change-Id: I88bee163dd311d6de1e5eef09f05c87892117b20
Reviewed-on: https://chromium-review.googlesource.com/187996
Tested-by: Chris Sosa <sosa@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Chris Sosa <sosa@chromium.org>
diff --git a/pre-upload.py b/pre-upload.py
index ae78c14..59836ad 100755
--- a/pre-upload.py
+++ b/pre-upload.py
@@ -691,12 +691,12 @@
 def _check_license(_project, commit):
   """Verifies the license header."""
   LICENSE_HEADER = (
-     r".* Copyright \(c\) 20[-0-9]{2,7} The Chromium OS Authors\. All rights "
-       r"reserved\." "\n"
-     r".* Use of this source code is governed by a BSD-style license that can "
-       "be\n"
-     r".* found in the LICENSE file\."
-       "\n"
+      r".* Copyright( \(c\))? 20[-0-9]{2,7} The Chromium OS Authors\. "
+          "All rights reserved\." "\n"
+      r".* Use of this source code is governed by a BSD-style license that can "
+          "be\n"
+      r".* found in the LICENSE file\."
+          "\n"
   )
   FAIL_MSG = "License must match"