Update the file-upload test

examples/upload_file_test.py

@@ -8,6 +8,8 @@ class FileUploadButtonTests(BaseCase):
     def test_file_upload_button(self):
         self.open("https://www.w3schools.com/jsref/tryit.asp"
                   "?filename=tryjsref_fileupload_get")
+        if not self.ad_block_on:
+            # If ad-blocking is disabled, block anyway.
             self.wait_for_element('[id*="google_ads"]')
             self.remove_elements('[id*="google_ads"]')
         self.switch_to_frame('iframeResult')