Don't impose WebSockets limits on Extensions

[goodov]

Currently we limit WebSockets connections for Extensions as part of #19990 implementation. We don't need to do this.

See #19990 (comment)

[stephendonner]

@goodov 👋 mind rounding our a test plan for this? cc @brave/qa-team and setting QA/Blocked until we've got that; thanks!

[goodov]

@goodov 👋 mind rounding our a test plan for this? cc @brave/qa-team and setting QA/Blocked until we've got that; thanks!

This can be tested by running a simple extension which creates WebSocket connections and shows that there are no limits (it can create much more than 10 connections).

Extension for test: ws-extension-test.zip

[stephendonner]

Verified PASSED using

Brave	1.38.71 Chromium: 100.0.4896.46 (Official Build) beta (x86_64)
Revision	5ca33821b2211805855c77d334353d27c616a7ca-refs/branch-heads/4896@{#584}
OS	macOS Version 11.6.5 (Build 20G527)

Steps:

1. install 1.38.71
2. launch Brave
3. install https://github.com/brave/brave-browser/files/8370086/ws-extension-test.zip
4. click the button
5. note the # of successfully created WebSockets connections

Confirmed we hit well over 10; in my limited testrun, it took until 65 before we started having connection-establishing/maintaining errors.

25 WebSockets	64+ WebSockets

[stephendonner]

@goodov asking on behalf of @brave/qa-team - are there really (easily) testable Android steps, here? 🙏

[goodov]

@goodov asking on behalf of @brave/qa-team - are there really (easily) testable Android steps, here? 🙏

There're no extensions, so this task is not applicable for Android.

[LaurenWags]

Linking confirmation that this is resolved from #19990 (comment)

[MadhaviSeelam]

Verified Passed using

Brave	1.38.83 Chromium: 100.0.4896.79 (Official Build) beta (64-bit)
Revision	8fb749dcab8700c24213791969e59deb72fee36f-refs/branch-heads/4896@{#1015}
OS	Windows 11 Version 21H2 (Build 22000.593)

• install 1.38.83
• launch Brave
• installed https://github.com/brave/brave-browser/files/8370086/ws-extension-test.zip
• click the start button
• note the # of successfully created WebSockets connections

Confirmed we hit well over 10.

25 web sockets	64+

[btlechowski]

Verification passed on

Brave	1.38.83 Chromium: 100.0.4896.79 (Official Build) beta (64-bit)
Revision	8fb749dcab8700c24213791969e59deb72fee36f-refs/branch-heads/4896@{#1015}
OS	Ubuntu 18.04 LTS

Confirmed I hit well over 10;