Hello TAG!

I'm requesting a TAG review of:

• Name: fetch() upload streaming
• Specification URL: https://fetch.spec.whatwg.org/#concept-body-stream
  • Commits: https://github.com/whatwg/fetch/commit/0c470b5860fe690b1136b0242951f682405103cc, https://github.com/whatwg/fetch/commit/55141d7644b4f8381814c82898a278796f7fd899
• User needs: https://github.com/whatwg/fetch/pull/425, https://groups.google.com/a/chromium.org/forum/#!topic/blink-network-dev/bsVgOxNCzFc
• Tests: http://web-platform-tests.live/fetch/api/basic/request-upload.any.js
• Primary contacts (and their relationship to the specification): @yoichio

Further details:

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

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 @yoichio, @yutakahirano