[CSS Grid Layout] Rename gridAutoFlow[Row|Column] to gridAutoFlow[Row|Column]Sparse

LayoutTests/fast/css-grid-layout/grid-item-auto-placement-automatic-span.html

Index: LayoutTests/fast/css-grid-layout/grid-item-auto-placement-automatic-span.html
diff --git a/LayoutTests/fast/css-grid-layout/grid-item-auto-placement-automatic-span.html b/LayoutTests/fast/css-grid-layout/grid-item-auto-placement-automatic-span.html
index 930bbde0a20969c9dbf312b850fa1a1ff43a5518..369451280557f5aa356b4424dfb2d6873114d2ba 100644
--- a/LayoutTests/fast/css-grid-layout/grid-item-auto-placement-automatic-span.html
+++ b/LayoutTests/fast/css-grid-layout/grid-item-auto-placement-automatic-span.html
@@ -69,7 +69,7 @@
 <p>Thist test checks that span is supported in auto-placement for automatic positions.</p>
 
 <div style="position: relative">
-    <div class="grid gridAutoFlowRow">
+    <div class="grid gridAutoFlowRowDense">
         <div class="sizedToGridArea autoRowAutoColumnSpanning2" data-offset-x="0" data-offset-y="0" data-expected-width="200" data-expected-height="50"></div>
         <div class="sizedToGridArea autoRowAutoColumn" data-offset-x="200" data-offset-y="0" data-expected-width="100" data-expected-height="50"></div>
         <div class="sizedToGridArea autoRowAutoColumn" data-offset-x="0" data-offset-y="50" data-expected-width="100" data-expected-height="50"></div>
@@ -102,7 +102,7 @@
 </div>
 
 <div style="position: relative">
-    <div class="grid gridAutoFlowRow">
+    <div class="grid gridAutoFlowRowDense">
         <div class="sizedToGridArea autoRowSpanning2AutoColumn" data-offset-x="0" data-offset-y="0" data-expected-width="100" data-expected-height="100"></div>
         <div class="sizedToGridArea autoRowSecondColumn" data-offset-x="100" data-offset-y="0" data-expected-width="100" data-expected-height="50"></div>
         <div class="sizedToGridArea autoRowThirdColumn" data-offset-x="200" data-offset-y="0" data-expected-width="100" data-expected-height="50"></div>
@@ -130,7 +130,7 @@
 </div>
 
 <div style="position: relative">
-    <div class="grid gridAutoFlowColumn">
+    <div class="grid gridAutoFlowColumnDense">
         <div class="sizedToGridArea autoRowSpanning2AutoColumn" data-offset-x="0" data-offset-y="0" data-expected-width="100" data-expected-height="100"></div>
         <div class="sizedToGridArea autoRowAutoColumn" data-offset-x="0" data-offset-y="100" data-expected-width="100" data-expected-height="50"></div>
         <div class="sizedToGridArea autoRowAutoColumn" data-offset-x="100" data-offset-y="0" data-expected-width="100" data-expected-height="50"></div>
@@ -163,7 +163,7 @@
 </div>
 
 <div style="position: relative">
-    <div class="grid gridAutoFlowColumn">
+    <div class="grid gridAutoFlowColumnDense">
         <div class="sizedToGridArea autoRowAutoColumnSpanning2" data-offset-x="0" data-offset-y="0" data-expected-width="200" data-expected-height="50"></div>
         <div class="sizedToGridArea secondRowAutoColumn" data-offset-x="0" data-offset-y="50" data-expected-width="100" data-expected-height="50"></div>
         <div class="sizedToGridArea thirdRowAutoColumn" data-offset-x="0" data-offset-y="100" data-expected-width="100" data-expected-height="50"></div>