feat: Editorial review — Related website sets docs (mdn#30654)

* Related website sets docs

* Rest of required content

* Fix broken link

* Updated status for RWS

* Update files/en-us/web/api/document/requeststorageaccessfor/index.md

Co-authored-by: Chris Fredrickson <cfredric@users.noreply.github.com>

* Update files/en-us/web/api/document/requeststorageaccessfor/index.md

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* Update files/en-us/web/api/storage_access_api/index.md

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* Update files/en-us/web/api/storage_access_api/index.md

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* Update files/en-us/web/api/storage_access_api/index.md

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* Update files/en-us/web/api/storage_access_api/index.md

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* Update files/en-us/web/privacy/index.md

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* Update files/en-us/web/api/document/requeststorageaccessfor/index.md

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* Fix description list linter mess

* Fixes for cfredric tech review comments

* address cfredric and tunetheweb feedback

* Update files/en-us/web/api/storage_access_api/using/index.md

Co-authored-by: Chris Fredrickson <cfredric@users.noreply.github.com>

* Update files/en-us/web/api/storage_access_api/using/index.md

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* Update files/en-us/web/api/storage_access_api/using/index.md

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* Update files/en-us/web/api/storage_access_api/using/index.md

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* Update files/en-us/web/api/document/requeststorageaccessfor/index.md

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* Update files/en-us/web/api/document/requeststorageaccessfor/index.md

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* More tinkering with descriptions

* more small tweaks, link fix

* Fix quote style - single to double

* Update files/en-us/web/api/storage_access_api/related_website_sets/index.md

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* Update files/en-us/web/api/storage_access_api/related_website_sets/index.md

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* Update files/en-us/web/api/storage_access_api/related_website_sets/index.md

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* Update files/en-us/web/api/storage_access_api/related_website_sets/index.md

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* Update files/en-us/web/api/storage_access_api/related_website_sets/index.md

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* Update files/en-us/web/api/storage_access_api/related_website_sets/index.md

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* Update files/en-us/web/api/storage_access_api/using/index.md

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* Update files/en-us/web/api/storage_access_api/using/index.md

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* Update files/en-us/web/api/storage_access_api/using/index.md

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* Update files/en-us/web/api/storage_access_api/using/index.md

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* Update files/en-us/web/api/storage_access_api/using/index.md

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* Update files/en-us/web/api/storage_access_api/using/index.md

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* Update files/en-us/web/http/cookies/index.md

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* Update files/en-us/web/api/storage_access_api/index.md

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* Update files/en-us/web/api/storage_access_api/index.md

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* Update files/en-us/web/api/storage_access_api/index.md

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* Update files/en-us/web/api/storage_access_api/index.md

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* Update files/en-us/web/api/storage_access_api/index.md

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* Update files/en-us/web/api/storage_access_api/index.md

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* Update files/en-us/web/api/storage_access_api/index.md

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* Update files/en-us/web/api/storage_access_api/index.md

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* Update files/en-us/web/api/storage_access_api/index.md

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* Update files/en-us/web/api/storage_access_api/index.md

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* Update files/en-us/web/api/document/hasstorageaccess/index.md

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* Update files/en-us/web/api/document/requeststorageaccess/index.md

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* Update files/en-us/web/api/document/requeststorageaccess/index.md

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* Update files/en-us/web/api/document/requeststorageaccessfor/index.md

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* Update files/en-us/web/api/document/requeststorageaccessfor/index.md

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* Update files/en-us/web/api/document/requeststorageaccessfor/index.md

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* Update files/en-us/web/api/document/requeststorageaccessfor/index.md

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* Update files/en-us/web/api/document/requeststorageaccessfor/index.md

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* responding to the rest of teoli2003s comments

* Add RWS well-known file and security information

---------

Co-authored-by: Chris Fredrickson <cfredric@users.noreply.github.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Jean-Yves Perrier <jypenator@gmail.com>

files/en-us/web/api/document/hasstorageaccess/index.md

@@ -8,7 +8,7 @@ browser-compat: api.Document.hasStorageAccess
 
 {{APIRef("Storage Access API")}}
 
-The **`hasStorageAccess()`** method of the {{domxref("Document")}} interface returns a {{jsxref("Promise")}} that resolves with a boolean value indicating whether the document has access to unpartitioned cookies.
+The **`hasStorageAccess()`** method of the {{domxref("Document")}} interface returns a {{jsxref("Promise")}} that resolves with a boolean value indicating whether the document has access to [third-party](/en-US/docs/Web/HTTP/Cookies#third-party_cookies), [unpartitioned](/en-US/docs/Web/API/Storage_Access_API#unpartitioned_versus_partitioned_cookies) cookies.
 
 This method is part of the [Storage Access API](/en-US/docs/Web/API/Storage_Access_API).
 
@@ -24,12 +24,12 @@ None.
 
 ### Return value
 
-A {{jsxref("Promise")}} that resolves with a boolean value indicating whether the document has access to unpartitioned cookies — `true` if it does, and `false` if not.
+A {{jsxref("Promise")}} that resolves with a boolean value indicating whether the document has access to third-party cookies — `true` if it does, and `false` if not.
 
 The result returned by this method can be inaccurate in a couple of circumstances:
 
-1. The user may have browser settings active that block unpartitioned cookies entirely — in this case `true` may be returned even though unpartitioned cookies are still inaccessible. To handle such a situation, you should gracefully handle any errors resulting in cookie values being unretrievable; for example, inform the user that access to their personalized settings is blocked and invite them to sign in again to use them.
-2. The browser might not block third-party cookie access by default — in this case `false` may be returned even though unpartitioned cookies are accessible, and storage access wouldn't need to be requested (i.e. via {{domxref("Document.requestStorageAccess()")}}). To get around this issue, you could query {{domxref("Document.cookie")}} to find out whether your cookies are accessible, and call {{domxref("Document.requestStorageAccess()")}} if they are not.
+1. The user may have active browser settings that block third-party cookies; in this case, `true` may be returned even though third-party cookies are still inaccessible. To handle such a situation, you should gracefully handle any errors resulting in cookie values being unretrievable; for example, inform the user that access to their personalized settings is blocked and invite them to sign in again to use them.
+2. The browser might not block third-party cookie access by default; in this case, `false` may be returned even though third-party cookies are accessible, and storage access wouldn't need to be requested (i.e., via {{domxref("Document.requestStorageAccess()")}}). To get around this issue, you could query {{domxref("Document.cookie")}} to find out whether your cookies are accessible, and call {{domxref("Document.requestStorageAccess()")}} if they are not.
 
 > **Note:** If the promise gets resolved and a user gesture event was being processed when the function was originally called, the resolve handler will run as if a user gesture was being processed, so it will be able to call APIs that require user activation.
 
@@ -63,5 +63,6 @@ document.hasStorageAccess().then((hasAccess) => {
 
 ## See also
 
+- {{domxref("Document.requestStorageAccess()")}}, {{domxref("Document.requestStorageAccessFor()")}}
 - [Using the Storage Access API](/en-US/docs/Web/API/Storage_Access_API/Using)
 - [Introducing Storage Access API](https://webkit.org/blog/8124/introducing-storage-access-api/) (WebKit blog)

files/en-us/web/api/document/index.md

@@ -256,6 +256,8 @@ _This interface also inherits from the {{DOMxRef("Node")}} and {{DOMxRef("EventT
   - : Replaces the existing children of a document with a specified new set of children.
 - {{DOMxRef("Document.requestStorageAccess()")}}
   - : Allows a document loaded in a third-party context (i.e. embedded in an {{htmlelement("iframe")}}) to request access to unpartitioned cookies, in cases where user agents by default block access to unpartitioned cookies by sites loaded in a third-party context to improve privacy.
+- {{DOMxRef("Document.requestStorageAccessFor()")}} {{Non-standard_Inline}}
+  - : Allows top-level sites to request third-party cookie access on behalf of embedded content originating from another site in the same [related website set](/en-US/docs/Web/API/Storage_Access_API/Related_website_sets).
 - {{domxref("Document.startViewTransition()")}} {{Experimental_Inline}}
   - : Starts a new {{domxref("View Transitions API", "view transition", "", "nocode")}} and returns a {{domxref("ViewTransition")}} object to represent it.
 

files/en-us/web/api/document/requeststorageaccess/index.md

@@ -8,9 +8,9 @@ browser-compat: api.Document.requestStorageAccess
 
 {{APIRef("Storage Access API")}}
 
-The **`requestStorageAccess()`** method of the {{domxref("Document")}} interface allows a document loaded in a third-party context (i.e. embedded in an {{htmlelement("iframe")}}) to request access to unpartitioned cookies.
+The **`requestStorageAccess()`** method of the {{domxref("Document")}} interface allows content loaded in a third-party context (i.e., embedded in an {{htmlelement("iframe")}}) to request access to third-party cookies. This is relevant to user agents that, by default, block access to [third-party](/en-US/docs/Web/HTTP/Cookies#third-party_cookies), [unpartitioned](/en-US/docs/Web/API/Storage_Access_API#unpartitioned_versus_partitioned_cookies) cookies to improve privacy (e.g., to prevent tracking), and is part of the [Storage Access API](/en-US/docs/Web/API/Storage_Access_API).
 
-This is relevant to user agents that by default block access to unpartitioned cookies by sites loaded in a third-party context to improve privacy (e.g. to prevent tracking), and is part of the [Storage Access API](/en-US/docs/Web/API/Storage_Access_API).
+To check whether permission to access third-party cookies has already been granted, you can call {{domxref("Permissions.query()")}}, specifying the feature name `"storage-access"`.
 
 > **Note:** Usage of this feature may be blocked by a {{httpheader("Permissions-Policy/storage-access", "storage-access")}} [Permissions Policy](/en-US/docs/Web/HTTP/Permissions_Policy) set on your server. In addition, the document must pass additional browser-specific checks such as allowlists, blocklists, on-device classification, user settings, anti-[clickjacking](/en-US/docs/Glossary/Clickjacking) heuristics, or prompting the user for explicit permission.
 
@@ -26,7 +26,7 @@ None.
 
 ### Return value
 
-A {{jsxref("Promise")}} that fulfills with `undefined` if the access to unpartitioned cookies was granted, and rejects if access was denied.
+A {{jsxref("Promise")}} that fulfills with `undefined` if the access to third-party cookies was granted, and rejects if access was denied.
 
 `requestStorageAccess()` requests are automatically denied unless the embedded content is currently processing a user gesture such as a tap or click ({{Glossary("transient activation")}}), or unless permission was already granted previously. If permission was not previously granted, they need to be run inside a user gesture-based event handler. The user gesture behavior depends on the state of the promise:
 
@@ -70,5 +70,6 @@ document.requestStorageAccess().then(
 
 ## See also
 
+- {{domxref("Document.hasStorageAccess()")}}, {{domxref("Document.requestStorageAccessFor()")}}
 - [Using the Storage Access API](/en-US/docs/Web/API/Storage_Access_API/Using)
 - [Introducing Storage Access API](https://webkit.org/blog/8124/introducing-storage-access-api/) (WebKit blog)

files/en-us/web/api/document/requeststorageaccessfor/index.md

@@ -0,0 +1,120 @@
+---
+title: "Document: requestStorageAccessFor() method"
+short-title: requestStorageAccessFor()
+slug: Web/API/Document/requestStorageAccessFor
+page-type: web-api-instance-method
+status:
+  - non-standard
+browser-compat: api.Document.requestStorageAccessFor
+---
+
+{{APIRef("Storage Access API")}}{{non-standard_header}}
+
+The **`requestStorageAccessFor()`** method of the {{domxref("Document")}} interface allows top-level sites to request third-party cookie access on behalf of embedded content originating from another site in the same [related website set](/en-US/docs/Web/API/Storage_Access_API/Related_website_sets). It returns a {{jsxref("Promise")}} that resolves if the access was granted, and rejects if access was denied.
+
+## Syntax
+
+```js-nolint
+requestStorageAccessFor(requestedOrigin)
+```
+
+### Parameters
+
+- `requestedOrigin`
+  - : A string representing the URL of the origin you are requesting third-party cookie access for.
+
+### Return value
+
+A {{jsxref("Promise")}} that fulfills with `undefined` if the access to third-party cookies was granted and rejects if access was denied.
+
+`requestStorageAccessFor()` requests are automatically denied unless the embedded content is currently processing a user gesture such as a tap or click ({{Glossary("transient activation")}}), or unless permission was already granted previously. If permission was not previously granted, they must run inside a user gesture-based event handler. The user gesture behavior depends on the state of the promise:
+
+- If the promise resolves (i.e., permission was granted), then the user gesture has not been consumed, so the script can subsequently call APIs requiring a user gesture.
+- If the promise is rejected (i.e., permission was not granted), then the user gesture has been consumed, so the script can't do anything that requires a gesture. This prevents scripts from calling `requestStorageAccessFor()` again if permission is denied.
+
+### Exceptions
+
+- `InvalidStateError` {{domxref("DOMException")}}
+  - : Thrown if the current {{domxref("Document")}} is not yet active.
+- `NotAllowedError` {{domxref("DOMException")}}
+  - : Thrown if:
+    - The document's window is not a [secure context](/en-US/docs/Web/Security/Secure_Contexts).
+    - The document is not the top-level document.
+    - The document has a `null` origin.
+    - The supplied `requestedOrigin` is [opaque](https://html.spec.whatwg.org/multipage/browsers.html#concept-origin-opaque).
+    - The top-level and embedded sites are not in the same [related website set](/en-US/docs/Web/API/Storage_Access_API/Related_website_sets).
+    - The embedding {{htmlelement("iframe")}} is sandboxed, and the `allow-storage-access-by-user-activation` token is not set.
+    - Usage is blocked by a {{httpheader("Permissions-Policy/storage-access", "storage-access")}} [Permissions Policy](/en-US/docs/Web/HTTP/Permissions_Policy).
+    - Usage is denied by the user agent's permission request to use the API.
+- `TypeError`
+  - : Thrown if `requestedOrigin` is not a valid URL.
+
+## Description
+
+The `requestStorageAccessFor()` method addresses challenges in adopting the Storage Access API on top-level sites that use cross-site images or scripts requiring cookies. It is relevant to user agents that by default block access to [third-party](/en-US/docs/Web/HTTP/Cookies#third-party_cookies), [unpartitioned](/en-US/docs/Web/API/Storage_Access_API#unpartitioned_versus_partitioned_cookies) cookies to improve privacy (e.g. to prevent tracking), and is a proposed extension of the [Storage Access API](/en-US/docs/Web/API/Storage_Access_API).
+
+`requestStorageAccessFor()` can enable third-party cookie access for cross-site resources directly embedded into a top-level site that are unable to request storage access themselves, for example {{htmlelement("img")}} elements. Cross-site content embedded in `<iframe>`s that has its own logic and resources and needs third-party cookie access should request storage access via {{domxref("Document.requestStorageAccess()")}}.
+
+To check whether permission to access third-party cookies has already been granted via `requestStorageAccessFor()`, you can call {{domxref("Permissions.query()")}}, specifying the feature name `"top-level-storage-access"`. This is different from the feature name used for the regular {{domxref("Document.requestStorageAccess()")}} method, which is `"storage-access"`.
+
+The `Permissions.query()` call must specify the embedded origin; for example:
+
+```js
+navigator.permissions.query({
+  name: "top-level-storage-access",
+  requestedOrigin: "https://www.example.com",
+});
+```
+
+> **Note:** Usage of this feature may be blocked by a {{httpheader("Permissions-Policy/storage-access", "storage-access")}} [Permissions Policy](/en-US/docs/Web/HTTP/Permissions_Policy) set on your server (the same one that controls the rest of the Storage Access API). In addition, the document must pass additional browser-specific checks such as allowlists, blocklists, on-device classification, user settings, or anti-[clickjacking](/en-US/docs/Glossary/Clickjacking) heuristics.
+
+## Examples
+
+```js
+function rSAFor() {
+  if ("requestStorageAccessFor" in document) {
+    document.requestStorageAccessFor("https://example.com").then(
+      (res) => {
+        // Use storage access
+        doThingsWithCookies();
+      },
+      (err) => {
+        // Handle errors
+      },
+    );
+  }
+}
+```
+
+After a successful `requestStorageAccessFor()` call, cross-site requests will include cookies if they include [CORS](/en-US/docs/Web/HTTP/CORS) / [`crossorigin`](/en-US/docs/Web/HTML/Attributes/crossorigin), so sites may want to wait before triggering a request. Such requests must use the [`credentials: "include"`](/en-US/docs/Web/API/fetch#credentials) option and resources must include the `crossorigin="use-credentials"` attribute.
+
+For example:
+
+```js
+function checkCookie() {
+  fetch("https://example.com/getcookies.json", {
+    method: "GET",
+    credentials: "include",
+  })
+    .then((response) => response.json())
+    .then((json) => {
+      // Do something
+    });
+}
+```
+
+> **Note:** See [Using the Storage Access API](/en-US/docs/Web/API/Storage_Access_API/Using) for a more complete example.
+
+## Specifications
+
+{{Specifications}}
+
+## Browser compatibility
+
+{{Compat}}
+
+## See also
+
+- {{domxref("Document.hasStorageAccess()")}}, {{domxref("Document.requestStorageAccess()")}}
+- [Using the Storage Access API](/en-US/docs/Web/API/Storage_Access_API/Using)
+- [Introducing Storage Access API](https://webkit.org/blog/8124/introducing-storage-access-api/) (WebKit blog)

files/en-us/web/api/permissions_api/index.md

@@ -41,14 +41,14 @@ A non-exhaustive list of permission-aware APIs includes:
 - [Payment Handler API](/en-US/docs/Web/API/Payment_Handler_API): `payment-handler`
 - [Push API](/en-US/docs/Web/API/Push_API): `push`
 - [Sensor APIs](/en-US/docs/Web/API/Sensor_APIs): `accelerometer`, `gyroscope`, `magnetometer`, `ambient-light-sensor`
-- [Storage Access API](/en-US/docs/Web/API/Storage_Access_API): `storage-access`
+- [Storage Access API](/en-US/docs/Web/API/Storage_Access_API): `storage-access`, `top-level-storage-access`
 - [Storage API](/en-US/docs/Web/API/Storage_API): `persistent-storage`
 - [Web MIDI API](/en-US/docs/Web/API/Web_MIDI_API): `midi`
 - [Window Management API](/en-US/docs/Web/API/Window_Management_API): `window-management`
 
 ## Examples
 
-We have made a simple example available called Location Finder. You can [run the example live](https://chrisdavidmills.github.io/location-finder-permissions-api/), or [view the source code on GitHub](https://github.com/chrisdavidmills/location-finder-permissions-api/tree/gh-pages).
+We have created a simple example called Location Finder. You can [run the example live](https://chrisdavidmills.github.io/location-finder-permissions-api/), or [view the source code on GitHub](https://github.com/chrisdavidmills/location-finder-permissions-api/tree/gh-pages).
 
 Read more about how it works in our article [Using the Permissions API](/en-US/docs/Web/API/Permissions_API/Using_the_Permissions_API).