Update the cors-rfc1918 IDL file

[lukebjerring]

Hello reviewer(s),

This PR is intended to consolidate the spec’s IDL definition with the WPT test suite’s copy, and any idlharness tests.

The up-to-date copy of the IDL file was automatically extracted from the reffy-reports repo (https://github.com/tidoust/reffy-reports/tree/master/whatwg/idl) which scrapes known specs automatically + regulary.

This PR is part of a migration project which will eventually be automatically updating and creating PRs for changes in spec IDL.

Please check that:
The Spec (and its source) is correct and up-to-date
All tests which cover the IDL in the spec have been migrated to fetch + use the idl in the interfaces/ directory (instead of inline copies in the test files).

[w3c-bots]

Build PASSED

Started: 2018-03-07 23:06:21
Finished: 2018-03-07 23:16:10

View more information about this build on:

• WPT PR Status
• TravisCI

[lukebjerring]

@foolip - Added a test. PTAL.

[annevk]

I'm not sure this should be inside the cors/ directory. fetch is probably more suitable if we don't want this as its own top-level thing. @mikewest?

[mikewest]

Putting them under /fetch/cors-rfc1918/ seems right to me. I'd also name them as .tentative, since I don't think we're anywhere near consensus that it's the right thing to do. :)

[lukebjerring]

Alrighty, moved as requested.