[css-flexbox] Correctly handle percentage sizing in the main axis

third_party/WebKit/LayoutTests/css3/flexbox/definite-cross-sizes.html

Index: third_party/WebKit/LayoutTests/css3/flexbox/definite-cross-sizes.html
diff --git a/third_party/WebKit/LayoutTests/css3/flexbox/definite-cross-sizes.html b/third_party/WebKit/LayoutTests/css3/flexbox/definite-cross-sizes.html
index f6f2a165706b5ed8a99234e472303be3cf325722..d78de16abd3972e0dda02cd73d333635917ccb03 100644
--- a/third_party/WebKit/LayoutTests/css3/flexbox/definite-cross-sizes.html
+++ b/third_party/WebKit/LayoutTests/css3/flexbox/definite-cross-sizes.html
@@ -81,11 +81,11 @@ is stretch (the default)</p>
   </div>
 </div>
 
-<p>Tests that we get an definite size in a nested flexbox where only the outer one has an explicit height and has an opposite direction. TODO: This is currently considered indefinite pending crbug.com/346275</p>
+<p>Tests that we get an definite size in a nested flexbox where only the outer one has an explicit height and has an opposite direction.</p>
 <div class="flexbox" style="height: 50px;" data-expected-height="50">
-  <div class="flexbox column flex-one" data-expected-height="50">
-    <div data-expected-height="50">
-      <div style="height: 50%" data-expected-height="50"> <!-- TODO: should be 25 pending the above bug -->
+  <div class="flexbox column" data-expected-height="50">
+    <div class="flex-one" data-expected-height="50">
+      <div style="height: 50%" data-expected-height="25">
         <div class="rect" data-expected-height="50"></div>
       </div>
     </div>