date.toString timezone differences in v10.4.x

[ravishivt]

• Version: v10.4.1
• Platform: Linux 8a47e98f5019 4.9.87-linuxkit-aufs deps: update openssl to 1.0.1j #1 SMP Wed Mar 14 15:12:16 UTC 2018 x86_64 Linux (docker node:10.4.1-alpine container)
• Subsystem: unknown

v10.4.0 does not abbreviate the timezone. I think this is due to the V8 6.6 -> 6.7 upgrade in #19989 as per this comment but wanted to confirm this is the correct behavior. The change has affected many of my jest snapshots.

v10.3.0:

# node -e 'console.log((new Date(0)).toString())'
Thu Jan 01 1970 00:00:00 GMT+0000 (UTC)

v10.4.1 (and v10.4.0):

# node -e 'console.log((new Date(0)).toString())'
Thu Jan 01 1970 00:00:00 GMT+0000 (Coordinated Universal Time)

[ravishivt]

I found https://bugs.chromium.org/p/v8/issues/detail?id=6076#c10 which indicates V8 did make this change on purpose. Closing this since this is now expected.