| This tests that we can serialize a page that has a downloaded url in an iframe without crashing. |
| <!-- iframe.src points to non-existing resource. |
| in 45.0.2454.85 save-as-complete-html points the saved frame to |
| a local/saved copy in foo_files/saved_resource.html which contains |
| serialized contents of the built-in "The file or directory could |
| <iframe src="no-such-file.exe"></iframe> |
| <!-- iframe.src points to a "download". |
| in 45.0.2454.85 save-as-complete-html points the saved frame to |
| <iframe src="thisdayinhistory.xls"></iframe> |