add `match_origin_as_fallback`

manifest.json

@@ -23,7 +23,8 @@
 				"lib/single-file-extension-frames.js"
 			],
 			"all_frames": true,
-			"match_about_blank": true
+			"match_about_blank": true,
+			"match_origin_as_fallback": true
 		},
 		{
 			"matches": [