import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/base/crashtests/473284.xul

@@ -0,0 +1,93 @@
+<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+         class="reftest-wait"
+onload="
+var result = '';
+try {
+  document.commandDispatcher.advanceFocusIntoSubtree({});
+  result += '1';
+} catch (ex) {
+  result += '.';
+}
+
+try {
+  document.commandDispatcher.advanceFocusIntoSubtree(document.documentElement);
+  result += '2';
+} catch (ex) {
+  result += '.';
+}
+
+try {
+  document.commandDispatcher.advanceFocusIntoSubtree(null);
+  result += '3';
+} catch (ex) {
+  result += '.';
+}
+
+try {
+  document.commandDispatcher.focusedElement = {};
+  result += '4';
+} catch (ex) {
+  result += '.';
+}
+
+try {
+  document.commandDispatcher.focusedElement = document.documentElement;
+  result += '5';
+} catch (ex) {
+  result += '.';
+}
+
+try {
+  document.commandDispatcher.focusedElement = null;
+  result += '6';
+} catch (ex) {
+  result += '.';
+}
+
+try {
+  document.popupNode = {};
+  result += '7';
+} catch (ex) {
+  result += '.';
+}
+
+try {
+  document.popupNode = document.documentElement;
+  result += '8';
+} catch (ex) {
+  result += '.';
+}
+
+try {
+  document.popupNode = null;
+  result += '9';
+} catch (ex) {
+  result += '.';
+}
+
+try {
+  document.commandDispatcher.focusedWindow = {};
+  result += 'a';
+} catch (ex) {
+  result += '.';
+}
+
+try {
+  document.commandDispatcher.focusedWindow = null;
+  result += 'b';
+} catch (ex) {
+  result += '.';
+}
+
+try {
+  document.commandDispatcher.focusedWindow = window;
+  result += 'c';
+} catch (ex) {
+  result += '.';
+}
+
+document.documentElement.textContent = result == '.23.56.89.bc' ? 'PASSED' : 'FAILED';
+if (document.documentElement.textContent == 'PASSED') {
+  document.documentElement.removeAttribute('class');
+}
+"/>