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[Lacros] Add documentation on how to enable/disable Lacros

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Add a .md file to describe how to explicitly enable/disable Lacros on a
device for testing, to serve as official instructions.

Bug: None
Change-Id: I3486155431b78728ef3f37d2f639b9d4d03e1a1f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4665901
Commit-Queue: Lily Chen <chlily@chromium.org>
Reviewed-by: Sven Zheng <svenzheng@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1166021}
This commit is contained in:
Lily Chen
2023-07-05 17:54:25 +00:00
committed by Chromium LUCI CQ
parent 4fdeff0f67
commit da9985ca7b
1 changed files with 29 additions and 0 deletions

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docs/lacros/enable_disable.md Normal file

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# Instructions to enable or disable Lacros
Google employees: See [go/lacros-dogfood](http://go/lacros-dogfood).
## Enabling Lacros (AKA Lacros only)
Navigate to `chrome://flags` on the (legacy) Ash browser.
1. Set `#lacros-availability-ignore` to "Enabled".
1. Click "Restart".
1. Set `#lacros-support` to "Enabled".
1. Set `#lacros-primary` to "Enabled".
1. Set `#lacros-only` to "Enabled".
1. Click "Restart".
1. The Chrome browser icon will now open the Lacros browser!
1. You can leave this mode at any time and return to your previous Chrome OS
(Ash) environment and state (windows, tabs).
## How to tell if Lacros is enabled
Navigate to `chrome://version` and check the first line of the version
information. If "lacros" is shown somewhere after the version number, then
Lacros is enabled.
## Disabling Lacros
Navigate to `os://flags` (if using the Lacros browser), or `chrome://flags` on
the (legacy) Ash browser.
1. Set `#lacros-support` to "Disabled" and click "Restart".
1. Device is returned to the original state with the legacy ChromeOS browser
(Ash).