src/vs/workbench/contrib/userDataSync/browser/userDataSyncMergesView.ts/UserDataSyncResourcesDecorationProvider/provideDecorations
class UserDataSyncResourcesDecorationProvider:	provideDecorations(resource: URI): IDecorationData | undefined {
		const userDataSyncResource = this.userDataSyncPreview.resources.find(c => isEqual(c.remote, resource));
		if (userDataSyncResource) {
			switch (userDataSyncResource.mergeState) {
				case MergeState.Conflict:
					return { letter: '⚠', color: listWarningForeground, tooltip: localize('conflict', "Conflicts Detected") };
				case MergeState.Accepted:
					return { letter: '✓', color: listDeemphasizedForeground, tooltip: localize('accepted', "Accepted") };
			}
		}
		return undefined;
	}