From a6e5eb38df6ce7c00fd35594653e42f4f634de6b Mon Sep 17 00:00:00 2001
From: Andrew Williams <awillia@chromium.org>
Date: Wed, 2 Feb 2022 13:30:56 -0500
Subject: [PATCH 1/3] Replace origin with storage key for BroadcastChannel
 partitioning

This PR updates the BroadcastChannel portion of the HTML standard
to have storage keys be used instead of origins when determining
which browsing contexts should be able to have BroadcastChannel
messages sent and received from them. Today, a storage key only
consists of an origin, but it will likely soon include the
top-level origin as well. Only using origin enables certain forms
of cross-site tracking. For more details, see:

https://privacycg.github.io/storage-partitioning/
---
 source | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/source b/source
index a2fb0bdf235..16c1f62e015 100644
--- a/source
+++ b/source
@@ -4126,6 +4126,7 @@ a.setAttribute('href', 'https://example.com/'); // change the content attribute
     <ul class="brief">
      <li><dfn data-x-href="https://storage.spec.whatwg.org/#obtain-a-local-storage-bottle-map">obtain a local storage bottle map</dfn></li>
      <li><dfn data-x-href="https://storage.spec.whatwg.org/#obtain-a-session-storage-bottle-map">obtain a session storage bottle map</dfn></li>
+     <li><dfn data-x-href="https://storage.spec.whatwg.org/#obtain-a-storage-key">obtain a storage key</dfn></li>
      <li><dfn data-x-href="https://storage.spec.whatwg.org/#storage-proxy-map">storage proxy map</dfn></li>
      <li><dfn data-x-href="https://storage.spec.whatwg.org/#legacy-clone-a-browsing-session-storage-shed">legacy-clone a browsing session storage shed</dfn></li>
     </ul>
@@ -102375,6 +102376,11 @@ interface <dfn interface>BroadcastChannel</dfn> : <span>EventTarget</span> {
    <li><p>Let <var>sourceOrigin</var> be <span>this</span>'s <span>relevant settings object</span>'s
    <span data-x="concept-settings-object-origin">origin</span>.</p></li>
 
+   <li><p>Let <var>sourceStorageKey</var> be the result of running <span>obtain a storage key</span>
+   with <span>this</span>'s <span>relevant settings object</span>.</p></li>
+
+   <li><p>If <var>sourceStorageKey</var> is failure, then return.</p><li>
+
    <li>
     <p>Let <var>destinations</var> be a list of <code>BroadcastChannel</code> objects that
     match the following criteria:</p>
@@ -102382,9 +102388,8 @@ interface <dfn interface>BroadcastChannel</dfn> : <span>EventTarget</span> {
     <ul>
      <li><p>They are <span>eligible for messaging</span>.</p></li>
 
-     <li><p>Their <span>relevant settings object</span>'s <span
-     data-x="concept-settings-object-origin">origin</span> is <span>same origin</span> with
-     <var>sourceOrigin</var>.</p></li>
+     <li><p>The result of running <span>obtain a storage key</span> with their <span>relevant
+     settings object</span> is not failure and is equal to <var>sourceStorageKey</var>.</p></li>
 
      <li><p>Their <span>channel name</span> <span>is</span> <span>this</span>'s <span>channel
      name</span>.</p></li>

From 08efb49c8dd68a60dfee4b7cfb9e9868e818c30b Mon Sep 17 00:00:00 2001
From: Andrew Williams <awillia@google.com>
Date: Fri, 11 Feb 2022 13:30:14 -0500
Subject: [PATCH 2/3] Use new storage key algorithms + address review feedback

---
 source | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/source b/source
index 16c1f62e015..93365734524 100644
--- a/source
+++ b/source
@@ -4126,7 +4126,8 @@ a.setAttribute('href', 'https://example.com/'); // change the content attribute
     <ul class="brief">
      <li><dfn data-x-href="https://storage.spec.whatwg.org/#obtain-a-local-storage-bottle-map">obtain a local storage bottle map</dfn></li>
      <li><dfn data-x-href="https://storage.spec.whatwg.org/#obtain-a-session-storage-bottle-map">obtain a session storage bottle map</dfn></li>
-     <li><dfn data-x-href="https://storage.spec.whatwg.org/#obtain-a-storage-key">obtain a storage key</dfn></li>
+     <li><dfn data-x-href="https://storage.spec.whatwg.org/#obtain-a-storage-key-for-non-storage-purposes">obtain a storage key for non-storage purposes</dfn></li>
+     <li><dfn data-x-href="https://storage.spec.whatwg.org/#storage-key-equal">storage key equal</dfn></li>
      <li><dfn data-x-href="https://storage.spec.whatwg.org/#storage-proxy-map">storage proxy map</dfn></li>
      <li><dfn data-x-href="https://storage.spec.whatwg.org/#legacy-clone-a-browsing-session-storage-shed">legacy-clone a browsing session storage shed</dfn></li>
     </ul>
@@ -102376,8 +102377,9 @@ interface <dfn interface>BroadcastChannel</dfn> : <span>EventTarget</span> {
    <li><p>Let <var>sourceOrigin</var> be <span>this</span>'s <span>relevant settings object</span>'s
    <span data-x="concept-settings-object-origin">origin</span>.</p></li>
 
-   <li><p>Let <var>sourceStorageKey</var> be the result of running <span>obtain a storage key</span>
-   with <span>this</span>'s <span>relevant settings object</span>.</p></li>
+   <li><p>Let <var>sourceStorageKey</var> be the result of running <span>obtain a storage key for
+   non-storage purposes</span> with <span>this</span>'s <span>relevant settings
+   object</span>.</p></li>
 
    <li><p>If <var>sourceStorageKey</var> is failure, then return.</p><li>
 
@@ -102388,8 +102390,9 @@ interface <dfn interface>BroadcastChannel</dfn> : <span>EventTarget</span> {
     <ul>
      <li><p>They are <span>eligible for messaging</span>.</p></li>
 
-     <li><p>The result of running <span>obtain a storage key</span> with their <span>relevant
-     settings object</span> is not failure and is equal to <var>sourceStorageKey</var>.</p></li>
+     <li><p>The result of running <span>obtain a storage key for non-storage purposes</span> with
+     their <span>relevant settings object</span> <span data-x="storage key equal">equals</span>
+     <var>sourceStorageKey</var>.</p></li>
 
      <li><p>Their <span>channel name</span> <span>is</span> <span>this</span>'s <span>channel
      name</span>.</p></li>

From 411793c14fce5b3ddf6869b1945b0a44df6e168a Mon Sep 17 00:00:00 2001
From: Andrew Williams <awillia@google.com>
Date: Tue, 15 Feb 2022 13:47:43 -0500
Subject: [PATCH 3/3] Address review feedback - sourceStorageKey can no longer
 be failure

---
 source | 2 --
 1 file changed, 2 deletions(-)

diff --git a/source b/source
index 93365734524..ca1a29f4782 100644
--- a/source
+++ b/source
@@ -102381,8 +102381,6 @@ interface <dfn interface>BroadcastChannel</dfn> : <span>EventTarget</span> {
    non-storage purposes</span> with <span>this</span>'s <span>relevant settings
    object</span>.</p></li>
 
-   <li><p>If <var>sourceStorageKey</var> is failure, then return.</p><li>
-
    <li>
     <p>Let <var>destinations</var> be a list of <code>BroadcastChannel</code> objects that
     match the following criteria:</p>