UserAgent: Mozilla/5.0 (X11; CrOS x86_64 10032.86.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.140 Safari/537.36
Platform: 10032.86.0 (Official Build) stable-channel eve

Steps to reproduce the problem:
1. Log into Pixelbook
2. Open gmail tab.
3. Wait ~30 seconds
4. Browser (and so the whole ChromeOS UI) crashes.

What is the expected behavior?
Browser doesn't crash

What went wrong?
Browser crashed.

Crashed report ID: 4c9a55e4f1721c4e

How much crashed? Whole browser

Is it a problem with a plugin? N/A 

Did this work before? Yes unsure. It started breaking around 15:30 on 2018-02-22 (Europe/London).

Chrome version: 63.0.3239.140  Channel: stable
OS Version: 10032.86.0
Flash Version: 28.0.0.137

It's just the UI - 'uptime' in the console shows that the kernel hasn't rebooted.

Happens even if the gmail tab is closed (i.e. open tab, close tab, then 30 seconds after opening the tab the OS crashes).

OS confirmed as up-to-date.

Happens in dogfood gmail or classic gmail.

Filed an internal bug as requested by techstop, but got sent over here instead.

Techstop have wiped the Pixelbook, and I re-enrolled it. It now appears to be stable again.