src/vs/editor/browser/config/fontMeasurements.ts/FontMeasurementsImpl/_evictUntrustedReadings
class FontMeasurementsImpl:	private _evictUntrustedReadings(): void {
		const values = this._cache.getValues();
		let somethingRemoved = false;
		for (const item of values) {
			if (!item.isTrusted) {
				somethingRemoved = true;
				this._cache.remove(item);
			}
		}
		if (somethingRemoved) {
			this._onDidChange.fire();
		}
	}