See https://docs.google.com/a/google.com/document/d/e/2PACX-1vRzTtvNRbRhgd7G_LxMj8ZT8ALIaXJ6o4kbcmEUYLZXlDosrz267z9bFs6CXggr6D5oDWPWPtdd6YU6/pub for more information about CRX₃.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/450258caf4b2019711d1c5d09d2dd8d3003df58f

commit 450258caf4b2019711d1c5d09d2dd8d3003df58f
Author: Joshua Pawlicki <waffles@chromium.org>
Date: Wed Apr 11 15:11:40 2018

Expand CRX magic number list in sniffer for CRX3


Bug:  831284 
Change-Id: I84d27cfb61725524d1ec9b12ffaa1bda221529ff
Reviewed-on: https://chromium-review.googlesource.com/1005797
Reviewed-by: Asanka Herath <asanka@chromium.org>
Commit-Queue: Joshua Pawlicki <waffles@chromium.org>
Cr-Commit-Position: refs/heads/master@{#549887}
[modify] https://crrev.com/450258caf4b2019711d1c5d09d2dd8d3003df58f/net/base/mime_sniffer.cc
[modify] https://crrev.com/450258caf4b2019711d1c5d09d2dd8d3003df58f/net/base/mime_sniffer_unittest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ff0c0fe296a8b3cfe657207e7772303c603e9498

commit ff0c0fe296a8b3cfe657207e7772303c603e9498
Author: Devlin Cronin <rdevlin.cronin@chromium.org>
Date: Thu Apr 12 18:35:25 2018

[Extensions] Add a new test for mime-type sniffing

Expand a mime type sniffing test to include testing a newly-minted
crx. This ensures that we always recognize the modern crx packaging as
the extensions mime type.

Bug:  831284 
Change-Id: I4622b9eb0911c76a59cf0c25068f8e9dffd97977
Reviewed-on: https://chromium-review.googlesource.com/1005843
Reviewed-by: Joshua Pawlicki <waffles@chromium.org>
Reviewed-by: Istiaque Ahmed <lazyboy@chromium.org>
Commit-Queue: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#550283}
[modify] https://crrev.com/ff0c0fe296a8b3cfe657207e7772303c603e9498/chrome/common/extensions/DEPS
[modify] https://crrev.com/ff0c0fe296a8b3cfe657207e7772303c603e9498/chrome/common/extensions/extension_unittest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ff0c0fe296a8b3cfe657207e7772303c603e9498

commit ff0c0fe296a8b3cfe657207e7772303c603e9498
Author: Devlin Cronin <rdevlin.cronin@chromium.org>
Date: Thu Apr 12 18:35:25 2018

[Extensions] Add a new test for mime-type sniffing

Expand a mime type sniffing test to include testing a newly-minted
crx. This ensures that we always recognize the modern crx packaging as
the extensions mime type.

Bug:  831284 
Change-Id: I4622b9eb0911c76a59cf0c25068f8e9dffd97977
Reviewed-on: https://chromium-review.googlesource.com/1005843
Reviewed-by: Joshua Pawlicki <waffles@chromium.org>
Reviewed-by: Istiaque Ahmed <lazyboy@chromium.org>
Commit-Queue: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#550283}
[modify] https://crrev.com/ff0c0fe296a8b3cfe657207e7772303c603e9498/chrome/common/extensions/DEPS
[modify] https://crrev.com/ff0c0fe296a8b3cfe657207e7772303c603e9498/chrome/common/extensions/extension_unittest.cc