Setting to Available, but needs to wait for the decision at the issue on WHATWG.

The conclusion is we'll be following the proposal. I.e. the new default will be the same-origin credentials mode.

https://github.com/whatwg/fetch/pull/585#issuecomment-329058038

Reassigning to yhirano@.

Need to check the progress of other browsers before taking the action.
See https://github.com/whatwg/fetch/pull/585#issuecomment-325351254

> Need to check the progress of other browsers before taking the action.

FWIW, this has not been a priority in firefox so far.  If we had update WPT tests, though, we could probably make the change relatively quickly.  If you have a target release we could try to match.

As mentioned in https://github.com/whatwg/fetch/pull/585#issuecomment-370943341, I'm happy to work on some WPTs for this as it seems to be a big blocker. Also I know this is assigned to yhirano@, however I'm more than happy to take it if he doesn't have the bandwidth!

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/5b7b98694d9a5bae9b7efeb0a4a34710c83b098b

commit 5b7b98694d9a5bae9b7efeb0a4a34710c83b098b
Author: Dominic Farolino <domfarolino@gmail.com>
Date: Mon Apr 30 11:20:36 2018

Set fetch()'s default credentials mode to same-origin

As per https://github.com/whatwg/fetch/pull/585, the
fetch() API's default credentials mode should be set to
same-origin in the Request constructor.

I2s: https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/WOAtshyL2As

R=yhirano@chromium.org, yoav@yoav.ws

Bug:  759543 
Change-Id: Id5cb8c747c41385edcc13775fdd18e1f27e7c3c9
Reviewed-on: https://chromium-review.googlesource.com/981512
Commit-Queue: Yoav Weiss <yoav@yoav.ws>
Reviewed-by: Yoav Weiss <yoav@yoav.ws>
Reviewed-by: Bernhard Bauer <bauerb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#554720}
[modify] https://crrev.com/5b7b98694d9a5bae9b7efeb0a4a34710c83b098b/content/browser/browsing_data/clear_site_data_throttle_browsertest.cc
[delete] https://crrev.com/bd588904caf43c922d2e17f18a30ded6530236d4/third_party/WebKit/LayoutTests/external/wpt/fetch/api/request/request-init-003.sub-expected.txt
[delete] https://crrev.com/bd588904caf43c922d2e17f18a30ded6530236d4/third_party/WebKit/LayoutTests/external/wpt/fetch/api/request/request-structure-expected.txt
[modify] https://crrev.com/5b7b98694d9a5bae9b7efeb0a4a34710c83b098b/third_party/WebKit/LayoutTests/http/tests/fetch/script-tests/request.js
[modify] https://crrev.com/5b7b98694d9a5bae9b7efeb0a4a34710c83b098b/third_party/blink/renderer/core/fetch/request.cc