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diff --git a/dom/tests/browser/browser_test_toolbars_visibility.js b/dom/tests/browser/browser_test_toolbars_visibility.js
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+++ b/dom/tests/browser/browser_test_toolbars_visibility.js
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+// Tests that toolbars have proper visibility when opening a new window
+// in either content or chrome context.
+
+const ROOT = "http://www.example.com/browser/dom/tests/browser/";
+const CONTENT_PAGE = ROOT + "test_new_window_from_content_child.html";
+const TARGET_PAGE = ROOT + "dummy.html";
+
+/**
+ * This function retrieves the visibility state of the toolbars of a
+ * window within the content context.
+ *
+ * @param aBrowser (<xul:browser>)
+ *        The browser to query for toolbar visibility states
+ * @returns Promise
+ *        A promise that resolves when the toolbar state is retrieved
+ *        within the content context, which value is an object that holds
+ *        the visibility state of the toolbars
+ */
+function getToolbarsFromBrowserContent(aBrowser) {
+  return ContentTask.spawn(aBrowser, {}, function*() {
+    return {
+      toolbar: content.toolbar.visible,
+      menubar: content.menubar.visible,
+      personalbar: content.personalbar.visible,
+      statusbar: content.statusbar.visible,
+      locationbar: content.locationbar.visible,
+    };
+  });
+}
+
+/**
+ * This function retrieves the visibility state of the toolbars of a
+ * window within the chrome context.
+ *
+ * @param win
+ *        the chrome privileged window
+ * @returns object
+ *        an object that holds the visibility state of the toolbars
+ */
+function getToolbarsFromWindowChrome(win) {
+  return {
+    toolbar: win.toolbar.visible,
+    menubar: win.menubar.visible,
+    personalbar: win.personalbar.visible,
+    statusbar: win.statusbar.visible,
+    locationbar: win.locationbar.visible,
+  }
+}
+
+/**
+ * Tests toolbar visibility when opening a window with default parameters.
+ *
+ * @param toolbars
+ *        the visibility state of the toolbar elements
+ */
+function testDefaultToolbars(toolbars) {
+  ok(toolbars.locationbar,
+     "locationbar should be visible on default window.open()");
+  ok(toolbars.menubar,
+     "menubar be visible on default window.open()");
+  ok(toolbars.personalbar,
+     "personalbar should be visible on default window.open()");
+  ok(toolbars.statusbar,
+     "statusbar should be visible on default window.open()");
+  ok(toolbars.toolbar,
+     "toolbar should be visible on default window.open()");
+}
+
+/**
+ * Tests toolbar visibility when opening a window with non default parameters
+ * on the content context.
+ *
+ * Ensure that locationbar can't be hidden in the content context, see bug#337344.
+ *
+ * @param toolbars
+ *        the visibility state of the toolbar elements
+ */
+function testNonDefaultContentToolbars(toolbars) {
+  // Locationbar should always be visible on content context
+  ok(toolbars.locationbar,
+     "locationbar should be visible even with location=no");
+  ok(!toolbars.menubar,
+     "menubar shouldn't be visible when menubar=no");
+  ok(!toolbars.personalbar,
+     "personalbar shouldn't be visible when personalbar=no");
+  // statusbar will report visible=true even when it's hidden because of bug#55820
+  todo(!toolbars.statusbar,
+       "statusbar shouldn't be visible when status=no");
+  ok(!toolbars.toolbar,
+     "toolbar shouldn't be visible when toolbar=no");
+}
+
+/**
+ * Tests toolbar visibility when opening a window with non default parameters
+ * on the chrome context.
+ *
+ * @param toolbars
+ *        the visibility state of the toolbar elements
+ */
+function testNonDefaultChromeToolbars(toolbars) {
+  // None of the toolbars should be visible if hidden with chrome privileges
+  ok(!toolbars.locationbar,
+     "locationbar should not be visible with location=no");
+  ok(!toolbars.menubar,
+     "menubar should not be visible with menubar=no");
+  ok(!toolbars.personalbar,
+     "personalbar should not be visible with personalbar=no");
+  ok(!toolbars.statusbar,
+     "statusbar should not be visible with status=no");
+  ok(!toolbars.toolbar,
+     "toolbar should not be visible with toolbar=no");
+}
+
+/**
+ * Ensure that toolbars of a window opened in the content context have the
+ * correct visibility.
+ *
+ * A window opened with default parameters should have all toolbars visible.
+ *
+ * A window opened with "location=no, personalbar=no, toolbar=no, scrollbars=no,
+ * menubar=no, status=no", should only have location visible.
+ */
+add_task(function*() {
+  yield BrowserTestUtils.withNewTab({
+    gBrowser,
+    url: CONTENT_PAGE,
+  }, function*(browser) {
+    // First, call the default window.open() which will open a new tab
+    let newTabPromise = BrowserTestUtils.waitForNewTab(gBrowser);
+    yield BrowserTestUtils.synthesizeMouseAtCenter("#winOpenDefault", {}, browser);
+    let tab = yield newTabPromise;
+
+    // Check that all toolbars are visible
+    let toolbars = yield getToolbarsFromBrowserContent(gBrowser.selectedBrowser);
+    testDefaultToolbars(toolbars);
+
+    // Cleanup
+    yield BrowserTestUtils.removeTab(tab);
+
+    // Now let's open a window with toolbars hidden
+    let winPromise = BrowserTestUtils.waitForNewWindow();
+    yield BrowserTestUtils.synthesizeMouseAtCenter("#winOpenNonDefault", {}, browser);
+    let popupWindow = yield winPromise;
+
+    let popupBrowser = popupWindow.gBrowser.selectedBrowser;
+    yield BrowserTestUtils.browserLoaded(popupBrowser);
+
+    // Test toolbars visibility
+    let popupToolbars = yield getToolbarsFromBrowserContent(popupBrowser);
+    testNonDefaultContentToolbars(popupToolbars);
+
+    // Ensure that chrome toolbars agree with content
+    let chromeToolbars = getToolbarsFromWindowChrome(popupWindow);
+    testNonDefaultContentToolbars(chromeToolbars);
+
+    // Close the new window
+    yield BrowserTestUtils.closeWindow(popupWindow);
+  });
+});
+
+/**
+ * Ensure that toolbars of a window opened to about:blank in the content context
+ * have the correct visibility.
+ *
+ * A window opened with "location=no, personalbar=no, toolbar=no, scrollbars=no,
+ * menubar=no, status=no", should only have location visible.
+ */
+add_task(function*() {
+  yield BrowserTestUtils.withNewTab({
+    gBrowser,
+    url: CONTENT_PAGE,
+  }, function*(browser) {
+    // Open a blank window with toolbars hidden
+    let winPromise = BrowserTestUtils.waitForNewWindow();
+    yield BrowserTestUtils.synthesizeMouseAtCenter("#winOpenNoURLNonDefault", {}, browser);
+    let popupWindow = yield winPromise;
+
+    // No need to wait for this window to load, since it's loading about:blank
+    let popupBrowser = popupWindow.gBrowser.selectedBrowser;
+    let popupToolbars = yield getToolbarsFromBrowserContent(popupBrowser);
+    testNonDefaultContentToolbars(popupToolbars);
+
+    // Ensure that chrome toolbars agree with content
+    let chromeToolbars = getToolbarsFromWindowChrome(popupWindow);
+    testNonDefaultContentToolbars(chromeToolbars);
+
+    // Close the new window
+    yield BrowserTestUtils.closeWindow(popupWindow);
+  });
+});
+
+/**
+ * Ensure that toolbars of a window opened in the chrome context have the
+ * correct visibility.
+ *
+ * A window opened with default parameters should have all toolbars visible.
+ *
+ * A window opened with "location=no, personalbar=no, toolbar=no, scrollbars=no,
+ * menubar=no, status=no", should not have any toolbar visible.
+ */
+add_task(function* () {
+  // First open a default window from this chrome context
+  let defaultWindowPromise = BrowserTestUtils.waitForNewWindow();
+  window.open(TARGET_PAGE, "_blank");
+  let defaultWindow = yield defaultWindowPromise;
+
+  // Check that all toolbars are visible
+  let toolbars = getToolbarsFromWindowChrome(defaultWindow);
+  testDefaultToolbars(toolbars);
+
+  // Now lets open a window with toolbars hidden from this chrome context
+  let features = "location=no, personalbar=no, toolbar=no, scrollbars=no, menubar=no, status=no";
+  let popupWindowPromise = BrowserTestUtils.waitForNewWindow();
+  window.open(TARGET_PAGE, "_blank", features);
+  let popupWindow = yield popupWindowPromise;
+
+  // Test none of the tooolbars are visible
+  let hiddenToolbars = getToolbarsFromWindowChrome(popupWindow);
+  testNonDefaultChromeToolbars(hiddenToolbars);
+
+  // Cleanup
+  yield BrowserTestUtils.closeWindow(defaultWindow);
+  yield BrowserTestUtils.closeWindow(popupWindow);
+});