Make importScripts() fail outside install

[annevk]

I thought we had agreed that importScripts() should fail outside of installation? Otherwise we still have an unrestricted synchronous IO API...

[wanderview]

It seems maybe "imported scripts updated flag" should be set at the end of the top level worker script evaluation instead of at the end of the first importScripts() call?

[jungkees]

Sorry that I had missed this part of the work. Addressed it: 0e021ef.

It seems maybe "imported scripts updated flag" should be set at the end of the top level worker script evaluation instead of at the end of the first importScripts() call?

Thanks for spotting this. I think the flag should be set only when all the importscripts(urls) have been successfully run without any runtime errors. So I put this step in the Install algorithm step 17.

[jungkees]

Closing.