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test_remote_passpointerevents.html 
<!DOCTYPE HTML>
<html>
  <head>
    <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
    <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  </head>
  <body>
    <script type="application/javascript;version=1.7">
      "use strict";

      SimpleTest.waitForExplicitFinish();

      function checkPointerEvents() {
        let iframe = this;
        let fRect = iframe.getBoundingClientRect();
        let e1 = document.elementFromPoint(fRect.left + 10, fRect.top + 10);
        let e2 = document.elementFromPoint(fRect.left + 110, fRect.top + 110);
        if (e1 === document.body && e2 === iframe) {
          is(e1, document.body, "check point in transparent region of the iframe");
          is(e2, iframe, "check point in opaque region of the iframe");
          SimpleTest.finish();
        }
        else {
          SimpleTest.executeSoon(checkPointerEvents.bind(iframe));
        }
      }

      function runTest() {
        let iframe = document.createElement("iframe");
        SpecialPowers.wrap(iframe).setAttribute('mozbrowser', 'true');
        SpecialPowers.wrap(iframe).setAttribute('mozpasspointerevents', 'true');
        SpecialPowers.wrap(iframe).setAttribute('remote', 'true');
        iframe.style = "border:none; width:400px; height:400px; pointer-events:none";
        iframe.src = "data:text/html,<html style='pointer-events:none'><div style='margin:100px; width:100px; height:100px; background:yellow; pointer-events:auto'>";

        document.body.appendChild(iframe);

        SimpleTest.executeSoon(checkPointerEvents.bind(iframe));
      }
      addEventListener("load", function() {
        SpecialPowers.addPermission("browser", true, document);
        SpecialPowers.addPermission("embed-apps", true, document);
        SpecialPowers.pushPrefEnv({
          "set": [
            ["dom.ipc.browser_frames.oop_by_default", true],
            ["dom.mozBrowserFramesEnabled", true]
          ]
        }, runTest);
      });
    </script>
  </body>
</html>
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