Bug 1779055 - Change private browsing new tab title to "New Private Tab". r=timhuang

Differential Revision: https://phabricator.services.mozilla.com/D151534

browser/base/content/tabbrowser-tabs.js

@@ -1000,7 +1000,7 @@
       // Normal tab title is used also in the permanent private browsing mode.
       return PrivateBrowsingUtils.isWindowPrivate(window) &&
         !Services.prefs.getBoolPref("browser.privatebrowsing.autostart")
-        ? "tabs.emptyPrivateTabTitle"
+        ? "tabs.emptyPrivateTabTitle2"
         : "tabs.emptyTabTitle";
     }
 

browser/base/content/test/general/browser_private_browsing_window.js

@@ -72,8 +72,8 @@ function test() {
 
     is(
       privateWin.gBrowser.tabs[0].label,
-      "Private Browsing",
-      "New tabs in the private browsing windows should have 'Private Browsing' as the title."
+      "New Private Tab",
+      "New tabs in the private browsing windows should have 'New Private Tab' as the title."
     );
 
     privateWin.close();

browser/locales/en-US/chrome/browser/tabbrowser.properties

@@ -3,7 +3,7 @@
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 tabs.emptyTabTitle=New Tab
-tabs.emptyPrivateTabTitle=Private Browsing
+tabs.emptyPrivateTabTitle2=New Private Tab
 tabs.closeTab=Close Tab
 tabs.close=Close