It's all there, we just need to forward the exclusion list and make the proper queries in the Rust lib.

Comment on attachment 8909105 [details] Bug 1400668 - Process key handle exclusion list when registering a token r=jcj J.C. Jones [:jcj] has approved the revision. https://phabricator.services.mozilla.com/D64#1410

Pushed by ttaubert@mozilla.com: https://hg.mozilla.org/integration/mozilla-inbound/rev/e907fa0c6d37 Process key handle exclusion list when registering a token r=jcj

Pushed by ttaubert@mozilla.com: https://hg.mozilla.org/integration/mozilla-inbound/rev/e4294dd8b8c9 Fix Android builds on a CLOSED TREE by adding the key_handles arg to the stub PlatformManager r=bustage

https://hg.mozilla.org/mozilla-central/rev/e907fa0c6d37 https://hg.mozilla.org/mozilla-central/rev/e4294dd8b8c9

Comment on attachment 8909105 [details] Bug 1400668 - Process key handle exclusion list when registering a token r=jcj Approval Request Comment [Feature/Bug causing the regression]: No regression, missing feature. [User impact if declined]: Might break testing the U2F/WebAuthn API. [Is this code covered by automated tests?]: No. [Has the fix been verified in Nightly?]: Manually, yes. [Needs manual test from QE? If yes, steps to reproduce]: [List of other uplifts needed for the feature/fix]: [Is the change risky?]: Not risky. [Why is the change risky/not risky?]: U2F/WebAuthn are not enabled by default. [String changes made/needed]: None. This is not critical but it would be nice to have if folks are going to test U2F/WebAuthn in Firefox 57. It's disabled by default but can be enabled via a pref. Low risk because it only touches dom/webauthn.

Comment on attachment 8909105 [details] Bug 1400668 - Process key handle exclusion list when registering a token r=jcj Happy to help if this remains disabled in 57. Should be in 57b3