Minor improvements to reftests.

sky/tests/resources/run-after-display.sky

Index: sky/tests/resources/run-after-display.sky
diff --git a/sky/tests/resources/run-after-display.sky b/sky/tests/resources/run-after-display.sky
new file mode 100644
index 0000000000000000000000000000000000000000..d3ee9613c2b5dfe5c2536054bd3e766941ffee51
--- /dev/null
+++ b/sky/tests/resources/run-after-display.sky
@@ -0,0 +1,11 @@
+<script>
+module.exports = function(callback) {
+    window.requestAnimationFrame(function() {
+        // At this point, only the animate has happened, but no compositing
+        // or layout.  Use a timeout for the callback so that notifyDone
+        // can be called inside of it.
+        // FIXME: we need a better way of waiting for chromium events to happen
+        window.setTimeout(callback, 1);

[abarth-chromium, 2015/01/06 22:48:09]

Why 1 instead of 0?

[ojan, 2015/01/06 22:54:41]

I just copy-pasted this from the Blink version. I considered changing it, but
didn't see advantages one way or another. I'll change it to 0.

[ojan, 2015/01/06 22:54:41]

I just copy-pasted this from the Blink version. I considered changing it, but
didn't see advantages one way or another. I'll change it to 0.

+    });
+};
+</script>