Góðan dag TAG！

I'm requesting a TAG review of:

• Name: backdrop-filter
• Specification URL: https://mfreed7.github.io/fxtf-drafts/filter-effects-2/Overview.html
• Explainer: https://github.com/mfreed7/backdrop-filter-feature
• Tests: https://github.com/web-platform-tests/wpt/tree/master/css/filter-effects (all tests prefixed with backdrop-filter-*)
• Primary contacts: @mfreed7

Further details (optional):

• Relevant time constraints or deadlines: None
• I have read and filled out the Self-Review Questionnaire on Security and Privacy. The assessment is here.
• I have reviewed the TAG's API Design Principles

You should also know that...

This feature is currently implemented in Chromium, hidden behind a flag: --enable-blink-features=CSSBackdropFilter

We'd prefer the TAG provide feedback as (please select one):

• open issues in our Github repo for each point of feedback
• open a single issue in our Github repo for the entire review
• leave review feedback as a comment in this issue and @-notify [@mfreed7]