Can we increase the priority of this a bit? This issue is causing all of our clean chromecast builds to take 10 minutes longer than necessary.

we're working on this as quickly as we can. it's blocked on  bug 602265  -- on Windows, builds crash and aren't just slow, and we want to fix that before rolling.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/bb76f310ee74474738306d867dad168c48668c24

commit bb76f310ee74474738306d867dad168c48668c24
Author: thakis <thakis@chromium.org>
Date: Sat Apr 16 02:22:00 2016

Roll clang 264915:266460.

Ran `tools/clang/scripts/upload_revision.py 266460`.

We disabled the experimental wasm backend for a while again in this
build. (It wasn't used for anything yet, and it's a bit unstable.)

BUG= 601774 

Review URL: https://codereview.chromium.org/1893673002

Cr-Commit-Position: refs/heads/master@{#387792}

[modify] https://crrev.com/bb76f310ee74474738306d867dad168c48668c24/tools/clang/scripts/update.py

Can we mark this as fixed?

Knock on wood -- so far things look pretty good.