src/vs/workbench/contrib/timeline/browser/timelinePane.ts/TimelinePane/setLoadingUriMessage
class TimelinePane:	setLoadingUriMessage() {
		const file = this.uri && basename(this.uri.fsPath);
		this.updateFilename(file);
		this.message = file ? localize('timeline.loading', "Loading timeline for {0}...", file) : '';
	}