Regular out-of-memory crashes, possibly associated with nodejs event emitter leaks

[riastradh-brave]

Description

Periodically -- every few days -- Brave crashes, gathering all windows into the current workspace and blanking them for a minute before exiting, and leaving the following console output:

[25289:25289:0522/210011.404725:ERROR:CONSOLE(27)] "(node) warning: possible EventEmitter memory leak detected. %d listeners added. Use emitter.setMaxListeners() to increase limit.", source: chrome://brave/usr/lib/brave/resources/app.asar/app/extensions/brave/gen/app.entry.js (27)
[25289:25289:0522/210011.405008:ERROR:CONSOLE(27)] "(node) warning: possible EventEmitter memory leak detected. %d listeners added. Use emitter.setMaxListeners() to increase limit.", source: chrome://brave/usr/lib/brave/resources/app.asar/app/extensions/brave/gen/app.entry.js (27)
[1:11:0100/000000.415998:FATAL:memory.cc(22)] Out of memory. size=262144
Failed to create socket for crash dumping.
Window crashed. Reloading...
Window crashed. Reloading...
Window crashed. Reloading...
Window crashed. Reloading...
Window crashed. Reloading...
Window crashed. Reloading...
Window crashed. Reloading...
(node:25289) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 notification-response listeners added. Use emitter.setMaxListeners() to increase limit
MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 notification-response listeners added. Use emitter.setMaxListeners() to increase limit
    at _addListener (events.js:262:19)
    at EventEmitter.addListener (events.js:279:10)
    at WebContents.win.webContents.on (/usr/lib/brave/resources/app.asar/app/browser/windows.js:349:19)
    at emitOne (events.js:96:13)
    at WebContents.emit (events.js:191:7)
Window crashed. Reloading...
Window crashed. Reloading...
Window crashed. Reloading...
Window crashed. Reloading...

Steps to Reproduce

Wish I knew! Just mind your own business using Brave, and all of a sudden...

Actual result:
Brave crashes!

Expected result:
Brave lets you continue minding your own business and getting work done.

Reproduces how often:
Once every few days.

Brave Version

about:brave info:

Name	Version
Brave	0.22.714
V8	6.6.346.26
rev	fa2fbca
Muon	6.0.9
OS Release	4.13.0-41-generic
Update Channel	Release
OS Architecture	x64
OS Platform	Linux
Node.js	7.9.0
Brave Sync	v1.4.2
libchromiumcontent	66.0.3359.139

Reproducible on current live release:
Yes.

Additional Information

I think it helps to be 90% of the way through writing a long comment on Github or similar, which doesn't save a draft anywhere, on the server or locally, until you actually hit submit.