[css-grid] Clearing override sizes before running grid's layout logic.

third_party/WebKit/LayoutTests/fast/css-grid-layout/grid-track-sizing-with-percentages-and-orthogonal-flows.html

Index: third_party/WebKit/LayoutTests/fast/css-grid-layout/grid-track-sizing-with-percentages-and-orthogonal-flows.html
diff --git a/third_party/WebKit/LayoutTests/fast/css-grid-layout/grid-track-sizing-with-percentages-and-orthogonal-flows.html b/third_party/WebKit/LayoutTests/fast/css-grid-layout/grid-track-sizing-with-percentages-and-orthogonal-flows.html
index db2f245065c34ecacad904ff9cbfbf945e8681d1..9cc11ddd671331a515e1b56c11a64e9abbd6adfb 100644
--- a/third_party/WebKit/LayoutTests/fast/css-grid-layout/grid-track-sizing-with-percentages-and-orthogonal-flows.html
+++ b/third_party/WebKit/LayoutTests/fast/css-grid-layout/grid-track-sizing-with-percentages-and-orthogonal-flows.html
@@ -47,7 +47,7 @@ body {
 
 <p>VERTICAL-LR container with HORIZONTAL-TB items.</p>
 <div class="container">
-    <div class="grid itemsStart contentStart verticalLR fit-content" data-expected-width="260" data-expected-height="120">
+    <div class="grid itemsStart contentStart verticalLR fit-content" data-expected-width="260" data-expected-height="110">
         <div class="firstRowFirstColumn   horizontalTB" data-offset-x="0"   data-offset-y="0"  data-expected-width="50" data-expected-height="10">X X X</div>
         <div class="firstRowSecondColumn  horizontalTB" data-offset-x="0" data-offset-y="100" data-expected-width="110" data-expected-height="10">X X X X X X</div>
         <div class="secondRowFirstColumn  horizontalTB" data-offset-x="110"   data-offset-y="0"  data-expected-width="110" data-expected-height="10">X X X X X X</div>
@@ -57,7 +57,7 @@ body {
 
 <p>VERTICAL-RL container with HORIZONTAL-TB items.</p>
 <div class="container">
-    <div class="grid itemsStart contentStart verticalRL fit-content" data-expected-width="260" data-expected-height="120">
+    <div class="grid itemsStart contentStart verticalRL fit-content" data-expected-width="260" data-expected-height="110">
         <div class="firstRowFirstColumn   horizontalTB" data-offset-x="210"   data-offset-y="0"  data-expected-width="50" data-expected-height="10">X X X</div>
         <div class="firstRowSecondColumn  horizontalTB" data-offset-x="150" data-offset-y="100" data-expected-width="110" data-expected-height="10">X X X X X X</div>
         <div class="secondRowFirstColumn  horizontalTB" data-offset-x="40"   data-offset-y="0"  data-expected-width="110" data-expected-height="10">X X X X X X</div>