Bug 1696286 - Disable main action highlight in PermissionUI panels when Proton is enabled. r=Gijs

Differential Revision: https://phabricator.services.mozilla.com/D107128

browser/modules/PermissionUI.jsm

@@ -97,6 +97,13 @@ XPCOMUtils.defineLazyGetter(this, "gBrowserBundle", function() {
   );
 });
 
+XPCOMUtils.defineLazyPreferenceGetter(
+  this,
+  "protonDoorhangersEnabled",
+  "browser.proton.doorhangers.enabled",
+  false
+);
+
 var PermissionUI = {};
 
 /**
@@ -589,6 +596,13 @@ var PermissionPromptPrototype = {
       options.hideClose = true;
     }
 
+    if (
+      protonDoorhangersEnabled &&
+      !mainAction.hasOwnProperty("disableHighlight")
+    ) {
+      mainAction.disableHighlight = true;
+    }
+
     options.eventCallback = (topic, nextRemovalReason, isCancel) => {
       // When the docshell of the browser is aboout to be swapped to another one,
       // the "swapping" event is called. Returning true causes the notification