For #11961: collect telemetry on all unique unsupported features that…#11969

Merged

timvandermeij merged 1 commit intomozilla:masterfrom

emalysz:11961-unsupported-feature-telemetry-error

Jun 12, 2020

Commits on Jun 11, 2020

For #11961: collect telemetry on all unique unsupported features that trigger fallback error.
emalysz
committed