Allow a comma-separated list of Chrome extensions to use

Author: mdmintz

seleniumbase/core/browser_launcher.py

@@ -117,9 +117,12 @@ def _set_chrome_options(
         abs_path = os.path.abspath(user_data_dir)
         chrome_options.add_argument("user-data-dir=%s" % abs_path)
     if extension_zip:
-        abs_path = os.path.abspath(extension_zip)
-        chrome_options.add_extension(abs_path)
+        extension_zip_list = extension_zip.split(',')
+        for extension_zip_item in extension_zip_list:
+            abs_path = os.path.abspath(extension_zip_item)
+            chrome_options.add_extension(abs_path)
     if extension_dir:
+        # load-extension input can be a comma-separated list
         abs_path = os.path.abspath(extension_dir)
         chrome_options.add_argument("--load-extension=%s" % abs_path)
     chrome_options.add_argument("--test-type")