src/vs/editor/browser/widget/diffReview.ts/DiffReview/_goToRow
class DiffReview:	private _goToRow(row: HTMLElement): void {
		let prev = this._getCurrentFocusedRow();
		row.tabIndex = 0;
		row.focus();
		if (prev && prev !== row) {
			prev.tabIndex = -1;
		}
		this.scrollbar.scanDomNode();
	}