This removes all of the e10s-related prompting code, including:
- doorhanger offering to opt-in into e10s
- pref and telemetry probe used to measure the number of users who remained opted-in
- dialog that shows up when unchecking the e10s checkbox saying that a tab will open, requesting feedback
- tab opening requesting feedback
- all related strings
The checkbox in the preferences window remains (nightly/aurora only), as well as the message saying that e10s requires a restart.
The e10s accessibility doorhanger remains. and chrome://browser/skin/e10s-64@2x.png remains too because it's also used in the a11y doorhanger.
MozReview-Commit-ID: aOdvnbeHOa
74aa60a982
