Use fetch's environment is offline

Author: sadym-chromium

source

@@ -2675,6 +2675,7 @@ a.setAttribute('href', 'https://example.com/'); // change the content attribute
      <li><dfn data-x-href="https://fetch.spec.whatwg.org/#credentials">credentials</dfn></li>
      <li><dfn data-x-href="https://fetch.spec.whatwg.org/#reserve-deferred-fetch-quota">reserve deferred fetch quota</dfn></li>
      <li><dfn data-x-href="https://fetch.spec.whatwg.org/#reserve-deferred-fetch-quota">potentially free deferred fetch quota</dfn></li>
+     <li><dfn data-x-href="https://fetch.spec.whatwg.org/#is-offline">is offline</dfn></li>
      <li>
       <dfn data-x="concept-response"
       data-x-href="https://fetch.spec.whatwg.org/#concept-response">response</dfn> and its
@@ -4696,7 +4697,6 @@ a.setAttribute('href', 'https://example.com/'); // change the content attribute
      <li><dfn data-x-href="https://w3c.github.io/webdriver-bidi/#webdriver-bidi-user-prompt-closed">WebDriver BiDi user prompt closed</dfn></li>
      <li><dfn data-x-href="https://w3c.github.io/webdriver-bidi/#webdriver-bidi-user-prompt-opened">WebDriver BiDi user prompt opened</dfn></li>
      <li><dfn data-x-href="https://w3c.github.io/webdriver-bidi/#webdriver-bidi-file-dialog-opened">WebDriver BiDi file dialog opened</dfn></li>
-     <li><dfn data-x-href="https://w3c.github.io/webdriver-bidi/#webdriver-bidi-network-is-offline">WebDriver BiDi network is offline</dfn></li>
     </ul>
    </dd>
 
@@ -125584,16 +125584,9 @@ interface <dfn interface>Navigator</dfn> {
 
   <div algorithm>
   <p>The <dfn attribute for="NavigatorOnLine"><code
-  data-x="dom-navigator-onLine">onLine</code></dfn> attribute must return false
-  if one of the following conditions are true, and must return true otherwise:</p>
-
-  <ul>
-   <li>The user agent will not contact the network when the user follows links or when a script
-   requests a remote page (or knows that such an attempt would fail)</li>
-
-   <li>The result of <span>WebDriver BiDi network is offline</span> with <span>this</span>'s
-   <span>relevant settings object</span> is true.</li>
-  </ul>
+  data-x="dom-navigator-onLine">onLine</code></dfn> attribute must return false if
+  <span>this</span>'s <span>relevant settings object</span> <span>is offline</span>, and must
+  return true otherwise.
   </div>
 
   <div algorithm>