Fix loading patches on Firefox 148

There have been some changes (BZ-543435) in how Firefox triggers load events, so we need to adjust the loading code. The new version should be compatible both with the old loading mechanism and the new one.

Author: filips123

native/userchrome/profile/chrome/pwa/chrome.sys.mjs

@@ -45,22 +45,17 @@ class ChromeLoader {
   static INITIALIZED_PREFERENCES = false;
 
   constructor () {
-    Services.obs.addObserver(this, 'chrome-document-global-created', false);
+    Services.obs.addObserver(this, 'chrome-document-global-created');
   }
 
   observe (window) {
-    window.ChromeLoader = ChromeLoader;
-    window.addEventListener('DOMContentLoaded', this, { once: true });
+    window.addEventListener('DOMContentLoaded', () => {
+      window.parent.ChromeLoader = ChromeLoader;
+      this.onDomContentLoaded(window);
+    }, { once: true });
   }
 
-  handleEvent (event) {
-    /**
-     * @type Document
-     * @property {Window} originalTarget
-     */
-    let document = event.originalTarget;
-
-    let window = document.defaultView;
+  onDomContentLoaded (window) {
     let location = window.location;
 
     if (window._gBrowser) window.gBrowser = window._gBrowser;

native/userchrome/profile/chrome/pwa/utils/systemIntegration.sys.mjs

@@ -144,7 +144,7 @@ function setWindowColors (window, site) {
   const styles = createOrGetStyles(window, INTEGRATION_STATIC_STYLES);
 
   // Set the window background color
-  if (lazy.xPref.get(window.ChromeLoader.PREF_SITES_SET_BACKGROUND_COLOR) && site.manifest.background_color) {
+  if (lazy.xPref.get('firefoxpwa.sitesSetBackgroundColor') && site.manifest.background_color) {
     const backgroundColor = site.manifest.background_color.substring(0, 7);
 
     // Set background color to the browser window
@@ -163,7 +163,7 @@ function setWindowColors (window, site) {
   }
 
   // Set the theme (titlebar) background and text colors
-  if (lazy.xPref.get(window.ChromeLoader.PREF_SITES_SET_THEME_COLOR) && site.manifest.theme_color) {
+  if (lazy.xPref.get('firefoxpwa.sitesSetThemeColor') && site.manifest.theme_color) {
     // Set the static theme color from the manifest
     const colorHex = site.manifest.theme_color.substring(0, 7);
     const colorRGB = colorHex.match(/^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i).slice(1).map(c => parseInt(c, 16));