Bug 1921060 - Implement full mute button spec r=desktop-theme-reviewers,tabbrowser-reviewers,dao,sessionstore-reviewers,sclements

Differential Revision: https://phabricator.services.mozilla.com/D231182

browser/components/tabbrowser/content/tabbrowser.js

@@ -2077,9 +2077,6 @@
         // process so the browser can no longer be considered to be
         // crashed.
         tab.removeAttribute("crashed");
-        // we call updatetabIndicatorAttr here, rather than _tabAttrModified, so as
-        // to be consistent with how "crashed" attribute changes are handled elsewhere
-        this.tabContainer.updateTabIndicatorAttr(tab);
       }
 
       // If the findbar has been initialised, reset its browser reference.
@@ -6421,8 +6418,13 @@
       event.stopPropagation();
       let tab = event.target.triggerNode?.closest("tab");
       if (!tab) {
-        event.preventDefault();
-        return;
+        if (event.target.triggerNode?.getRootNode()?.host?.closest("tab")) {
+          // Check if triggerNode is within shadowRoot of moz-button
+          tab = event.target.triggerNode?.getRootNode().host.closest("tab");
+        } else {
+          event.preventDefault();
+          return;
+        }
       }
 
       const tooltip = event.target;
@@ -6431,7 +6433,7 @@
       const tabCount = this.selectedTabs.includes(tab)
         ? this.selectedTabs.length
         : 1;
-      if (tab._overPlayingIcon) {
+      if (tab._overPlayingIcon || tab._overAudioButton) {
         let l10nId;
         const l10nArgs = { tabCount };
         if (tab.selected) {
@@ -7045,7 +7047,6 @@
             // process so the browser can no longer be considered to be
             // crashed.
             tab.removeAttribute("crashed");
-            gBrowser.tabContainer.updateTabIndicatorAttr(tab);
           }
 
           if (this.isFindBarInitialized(tab)) {
@@ -7370,7 +7371,6 @@
           delete this.mBrowser.initialPageLoadedFromUserAction;
           // If the browser is loading it must not be crashed anymore
           this.mTab.removeAttribute("crashed");
-          gBrowser.tabContainer.updateTabIndicatorAttr(this.mTab);
         }
 
         if (this._shouldShowProgress(aRequest)) {