Merge branch 'ap-floc-docs' into 'master'

Add documentation for the FLoC feature

See merge request gitlab-org/gitlab!62210

doc/user/admin_area/settings/floc.md

+---
+stage: none
+group: unassigned
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
+---
+
+# Federated Learning of Cohorts (FLoC) **(FREE SELF)**
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/60933) in GitLab Free 13.12.
+
+Federated Learning of Conhorts (FLoC) is a feature that the Chrome browser has
+rolled out, where users are categorized into different cohorts, so that
+advertisers can use this data to uniquely target and track users. For more
+information, visit the [FLoC repository](https://github.com/WICG/floc).
+
+To avoid users being tracked and categorized in any GitLab instance, FLoC is
+disabled by default by sending the following header:
+
+```plaintext
+Permissions-Policy: interest-cohort=()
+```
+
+To enable it:
+
+1. Go to the Admin Area (**{admin}**) and select **Settings > General**.
+1. Expand **Federated Learning of Cohorts**.
+1. Check the box.
+1. Click **Save changes**.
+
+<!-- ## Troubleshooting
+
+Include any troubleshooting steps that you can foresee. If you know beforehand what issues
+one might have when setting this up, or when something is changed, or on upgrading, it's
+important to describe those, too. Think of things that may go wrong and include them here.
+This is important to minimize requests for support, and to avoid doc comments with
+questions that you know someone might ask.
+
+Each scenario can be a third-level heading, e.g. `### Getting error message X`.
+If you have none to add when creating a doc, leave this section in place
+but commented out to help encourage others to add to it in the future. -->

doc/user/admin_area/settings/index.md

@@ -28,6 +28,7 @@ Access the default page for admin area settings by navigating to **Admin Area >
 | [External Authentication](external_authorization.md#configuration) | External Classification Policy Authorization |
 | [Web terminal](../../../administration/integration/terminal.md#limiting-websocket-connection-time) | Set max session time for web terminal. |
 | [Web IDE](../../project/web_ide/index.md#enabling-live-preview) | Manage Web IDE Features. |
+| [FLoC](floc.md) | Enable or disable [Federated Learning of Cohorts (FLoC)](https://en.wikipedia.org/wiki/Federated_Learning_of_Cohorts) tracking. |
 
 ## Integrations