Update copyright headers in net/

The methodology used to generate this CL is documented in
https://crbug.com/1098010#c95.

No-Try: true
Bug: 1098010
Change-Id: I26884c98578ee1ba4d7708ace5b25d1df5c0e576
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3895939
Owners-Override: Avi Drissman <avi@chromium.org>
Commit-Queue: Mark Mentovai <mark@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
Auto-Submit: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1047098}
NOKEYCHECK=True
GitOrigin-RevId: 6459548ee396bbe1104978b01e19fcb1bb68d0e5
diff --git a/BUILD.gn b/BUILD.gn
index 443d1c2..cf2aa79 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1,4 +1,4 @@
-# Copyright 2016 The Chromium Authors. All rights reserved.
+# Copyright 2016 The Chromium Authors
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
diff --git a/backoff_server.py b/backoff_server.py
index ca2c57c..0a236c1 100755
--- a/backoff_server.py
+++ b/backoff_server.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# Copyright (c) 2012 The Chromium Authors. All rights reserved.
+# Copyright 2012 The Chromium Authors
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
diff --git a/run_testserver.cc b/run_testserver.cc
index 3bfabcf..d110d2d 100644
--- a/run_testserver.cc
+++ b/run_testserver.cc
@@ -1,4 +1,4 @@
-// Copyright 2013 The Chromium Authors. All rights reserved.
+// Copyright 2013 The Chromium Authors
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
diff --git a/testserver.py b/testserver.py
index 400e593..98bdb6a 100755
--- a/testserver.py
+++ b/testserver.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env vpython3
-# Copyright 2013 The Chromium Authors. All rights reserved.
+# Copyright 2013 The Chromium Authors
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
diff --git a/testserver_base.py b/testserver_base.py
index 319afd4..d52fc5d 100644
--- a/testserver_base.py
+++ b/testserver_base.py
@@ -1,4 +1,4 @@
-# Copyright 2013 The Chromium Authors. All rights reserved.
+# Copyright 2013 The Chromium Authors
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.