Blink doesn't honor percent heights on children of "align-self:stretch" flex items in a fixed-height

LayoutTests/css3/flexbox/flex-align-vertical-writing-mode.html

Index: LayoutTests/css3/flexbox/flex-align-vertical-writing-mode.html
diff --git a/LayoutTests/css3/flexbox/flex-align-vertical-writing-mode.html b/LayoutTests/css3/flexbox/flex-align-vertical-writing-mode.html
index 2836f9e715af8ef9f10335800cf74c359ec6a512..9dc0167d36ac73681a6195eaa507c2a4717dbbed 100644
--- a/LayoutTests/css3/flexbox/flex-align-vertical-writing-mode.html
+++ b/LayoutTests/css3/flexbox/flex-align-vertical-writing-mode.html
@@ -68,8 +68,7 @@ body {
   <div data-expected-width="50" data-offset-x="50" class="flex-one" style="width: 50px; margin: 0 20px 0 10px;"></div>
   <div data-expected-width="90" data-offset-x="10" class="flex-one" style="margin: 0 20px 0 10px;"></div>
   <div data-expected-width="120" data-offset-x="0" class="flex-one">
-    <!-- Since no parent has a fixed height, this div shrink-wraps. -->
-    <div data-expected-width="0" style="width: 100%; background-color:black"></div>
+    <div data-expected-width="120" style="width: 100%; background-color:black"></div>
   </div>
 </div>