Icon fetch in Gecko/Blink uses document charset for URL encoding

[saschanaz]

What is the issue with the Notifications API Standard?

Part of #208 and #5.

Just found that Both Firefox and Chrome depends on the legacy URL encoding behavior, while Safari has no icon support.

We can spec that as is, but maybe it's worth changing to use utf-8? For now I'll gather use counter for this.

[annevk]

Using UTF-8 would definitely be preferable. Thanks for adding a counter!

cc @beverloo

[saschanaz]

Non-UTF8 usage is absolute zero. (It's all "either way", meaning the URL decoding result for icon is always same regardless of whether it's by UTF8 or by the document charset.)

We'll start making it always UTF8.

[saschanaz]

Spoke too soon, I found an error in the telemetry. Surely it couldn't be absolute zero...

[saschanaz]

The updated telemetry still reports absolute zero use of non-UTF8 URLs. We'll try dropping document charset use.