Update copyright headers in chrome

The methodology used to generate this CL is documented in
https://crbug.com/1098010#c34, except for the sweep for "All Rights
Reserved" as that generates a lot of exceptions and will be a follow-
up.

No-Try: true
No-Presubmit: true
Bug: 1098010
Change-Id: I5caf6b21db9c12bea71258223f59c1ac4313a738
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3888258
Auto-Submit: Avi Drissman <[email protected]>
Commit-Queue: Mark Mentovai <[email protected]>
Reviewed-by: Mark Mentovai <[email protected]>
Owners-Override: Avi Drissman <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1045289}
diff --git a/chrome/browser/paint_preview/BUILD.gn b/chrome/browser/paint_preview/BUILD.gn
index acd2db8..da7e78c 100644
--- a/chrome/browser/paint_preview/BUILD.gn
+++ b/chrome/browser/paint_preview/BUILD.gn
@@ -1,5 +1,5 @@
-# Copyright 2020 The Chromium Authors.All rights reserved.
-# Use of this source code is governed by a BSD - style license that can be
+# Copyright 2020 The Chromium Authors
+# Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 source_set("services") {