Update Firefox options and extensions

Author: mdmintz

seleniumbase/core/browser_launcher.py

@@ -2407,8 +2407,6 @@ def _set_firefox_options(
     options.set_preference("dom.webnotifications.enabled", False)
     options.set_preference("dom.disable_beforeunload", True)
     options.set_preference("browser.contentblocking.database.enabled", True)
-    options.set_preference("extensions.allowPrivateBrowsingByDefault", True)
-    options.set_preference("extensions.PrivateBrowsing.notification", False)
     options.set_preference("extensions.systemAddon.update.enabled", False)
     options.set_preference("extensions.update.autoUpdateDefault", False)
     options.set_preference("extensions.update.enabled", False)

seleniumbase/extensions/ReadMe.md

@@ -9,4 +9,5 @@
 * ad_block.zip => This extension blocks certain types of iframe ads from loading.
 * disable_csp.zip => This extension disables a website's Content-Security-Policy.
 * recorder.zip => Save browser actions to sessionStorage with good CSS selectors.
-* sbase_ext.zip => An extension that does nothing, but helps people learn things.
+* sbase_ext.zip => A Chromium extension that does nothing. (Used for testing purposes)
+* firefox_addon.xpi => A Firefox add-on that does nothing. (Used for testing purposes)