no-browser-refs-in-toolkit

Rejects for using any code from browser/ (Desktop Firefox) inside toolkit, as toolkit is for code shared with other Gecko consumers like Firefox on Android, Thunderbird, etc.

Examples of incorrect code for this rule:

"chrome://browser/content/browser.xhtml"
"resource:///modules/BrowserWindowTracker.sys.mjs"
"browser/browser.ftl"

Examples of correct code for this rule:

"chrome://global/content/aboutAbout.html"
"resource://gre/modules/AppConstants.sys.mjs"
"toolkit/global/aboutFoo.ftl"