Bug 1905468 - Prevent some more mouse events from reaching the content page. r=sfoster, a=dmeehan

Differential Revision: https://phabricator.services.mozilla.com/D215515

Author: Niklas Baumgardner

browser/actors/ScreenshotsComponentChild.sys.mjs

@@ -34,13 +34,21 @@ export class ScreenshotsComponentChild extends JSWindowActorChild {
     "mousemove",
     "mousedown",
     "mouseup",
+    "mouseenter",
+    "mouseover",
+    "mouseout",
+    "mouseleave",
     "touchstart",
     "touchmove",
     "touchend",
     "dblclick",
     "auxclick",
     "keypress",
     "contextmenu",
+    "pointerenter",
+    "pointerover",
+    "pointerout",
+    "pointerleave",
   ];
 
   get overlay() {

browser/components/screenshots/tests/browser/browser_test_prevent_events.js

@@ -47,6 +47,10 @@ add_task(async function test_events_prevented() {
       // pointermove/mousemove, pointerdown/mousedown, pointerup/mouseup events
       await helper.clickTestPageElement();
 
+      // pointerover/mouseover, pointerout/mouseout
+      await mouse.over(100, 100);
+      await mouse.out(100, 100);
+
       // click events and contextmenu
       await mouse.dblclick(100, 100);
       await mouse.auxclick(100, 100, { button: 1 });