From 6469b475d2b63b005128936602ec586992be9215 Mon Sep 17 00:00:00 2001
From: Ian Hickson <ian@hixie.ch>
Date: Mon, 30 Jan 2017 23:32:44 -0800
Subject: [PATCH] Let's document this line so I don't accidentally remove it
 again. (#7750)

---
 dev/benchmarks/complex_layout/lib/main.dart | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dev/benchmarks/complex_layout/lib/main.dart b/dev/benchmarks/complex_layout/lib/main.dart
index 931d2a62e1..6909675299 100644
--- a/dev/benchmarks/complex_layout/lib/main.dart
+++ b/dev/benchmarks/complex_layout/lib/main.dart
@@ -92,7 +92,7 @@ class ComplexLayoutState extends State<ComplexLayout> {
         children: <Widget>[
           new Expanded(
             child: new LazyBlock(
-              key: new Key('main-scroll'),
+              key: new Key('main-scroll'), // this key is used by the driver test
               delegate: new FancyItemDelegate(),
             )
           ),