Bug 26100: baseMenuOverlay.xul was removed by Mozilla

Now it is inline in the browser.xul[1].

[1] https://bugzilla.mozilla.org/show_bug.cgi?id=1441378

src/chrome.manifest

@@ -13,7 +13,7 @@ override chrome://branding/locale/brand.properties chrome://torbutton/locale/bra
 overlay chrome://browser/content/aboutDialog.xul chrome://torbutton/content/aboutDialog.xul
 
 # UI customization
-overlay chrome://browser/content/baseMenuOverlay.xul chrome://torbutton/content/menu-overlay.xul
+overlay chrome://browser/content/browser.xul chrome://torbutton/content/menu-overlay.xul
 overlay about:preferences chrome://torbutton/content/privacy-prefs-overlay.xul
 overlay chrome://browser/content/browser.xul chrome://torbutton/content/tor-circuit-display.xul