Remove the "horizontal-bt" value from -webkit-writing-mode

third_party/WebKit/LayoutTests/css3/flexbox/writing-modes.html

Index: third_party/WebKit/LayoutTests/css3/flexbox/writing-modes.html
diff --git a/third_party/WebKit/LayoutTests/css3/flexbox/writing-modes.html b/third_party/WebKit/LayoutTests/css3/flexbox/writing-modes.html
index af585c2bcccdc25c9748086ab8d344c7697c2ae1..af9615e9a6456329d69a39f4203a79ad03905f03 100644
--- a/third_party/WebKit/LayoutTests/css3/flexbox/writing-modes.html
+++ b/third_party/WebKit/LayoutTests/css3/flexbox/writing-modes.html
@@ -18,10 +18,11 @@ body {
     direction: rtl;
 }
 
-.bt {
-    -webkit-writing-mode: horizontal-bt;
+.horizontal-tb {
+    writing-mode:horizontal-tb;
 }
 
+
 .vertical-rl, .vertical-lr {
     height: 600px;
 }
@@ -29,7 +30,6 @@ body {
 :-webkit-any(.vertical-rl, .vertical-lr) div {
     width: 20px;
 }
-
 .vertical-rl {
     -webkit-writing-mode: vertical-rl;
 }
@@ -88,7 +88,7 @@ body {
 <div style="position:relative">
 <div class="flexbox vertical-lr">
   <div data-expected-height="150" data-offset-y="0" style="flex: 1 0 0;"></div>
-  <div data-expected-height="300" data-offset-y="150" class="bt" style="flex: 2 0 0;"></div>
+  <div data-expected-height="300" data-offset-y="150" class="horizontal-tb" style="flex: 2 0 0;"></div>
   <div data-expected-height="150" data-offset-y="450" style="flex: 1 0 0;"></div>
 </div>
 </div>
@@ -103,7 +103,7 @@ body {
 
 <div style="position:relative">
 <div class="flexbox vertical-lr">
-  <div data-expected-height="300" data-offset-y="0" class="bt" style="flex: 1 0 0;-webkit-padding-start:200px;-webkit-padding-end:200px;-webkit-padding-before:100px;-webkit-padding-after:100px;"></div>
+  <div data-expected-height="300" data-offset-y="0" class="horizontal-tb" style="flex: 1 0 0;-webkit-padding-start:200px;-webkit-padding-end:200px;-webkit-padding-before:100px;-webkit-padding-after:100px;"></div>
   <div data-expected-height="200" data-offset-y="300" style="flex: 2 0 0;"></div>
   <div data-expected-height="100" data-offset-y="500" style="flex: 1 0 0;"></div>
 </div>
@@ -129,7 +129,7 @@ body {
 <div style="position:relative">
 <div class="flexbox vertical-lr">
   <div data-expected-height="75" data-offset-y="0" style="flex: 1 0 0;margin: auto 0;"></div>
-  <div data-expected-height="450" data-offset-y="75" class="bt" style="flex: 2 0 auto; height: auto;"><div style="width:200px;height:300px;background-color:orange;"></div></div>
+  <div data-expected-height="450" data-offset-y="75" class="horizontal-tb" style="flex: 2 0 auto; height: auto;"><div style="width:200px;height:300px;background-color:orange;"></div></div>
   <div data-expected-height="75" data-offset-y="525" style="flex: 1 0 0;"></div>
 </div>
 </div>
@@ -144,7 +144,7 @@ body {
 
 <div style="position:relative">
 <div class="flexbox vertical-lr">
-  <div data-expected-height="150" data-offset-y="0" class="bt" style="flex: 1 0 0;-webkit-margin-start:auto;-webkit-margin-end:auto;-webkit-margin-before:0;-webkit-margin-after:0;;"></div>
+  <div data-expected-height="150" data-offset-y="0" class="horizontal-tb" style="flex: 1 0 0;-webkit-margin-start:auto;-webkit-margin-end:auto;-webkit-margin-before:0;-webkit-margin-after:0;;"></div>
   <div data-expected-height="300" data-offset-y="150" style="flex: 2 0 0;"></div>
   <div data-expected-height="150" data-offset-y="450" style="flex: 1 0 0;"></div>
 </div>
@@ -153,7 +153,7 @@ body {
 <div style="position:relative">
 <div class="flexbox vertical-lr rtl">
   <div data-expected-height="75" data-offset-y="525" style="flex: 1 0 0; margin: auto 0;"></div>
-  <div data-expected-height="350" data-offset-y="175" class="bt" style="flex: 2 0 0; padding: 100px 0;"></div>
+  <div data-expected-height="350" data-offset-y="175" class="horizontal-tb" style="flex: 2 0 0; padding: 100px 0;"></div>
   <div data-expected-height="75" data-offset-y="0" style="flex: 1 0 0; -webkit-margin-start: 100px;"></div>
 </div>
 </div>
@@ -179,22 +179,6 @@ body {
 </div>
 </div>
 
-<div style="position:relative">
-<div class="flexbox bt" style="height:200px">
-  <div data-expected-width="150" data-offset-y="180" data-offset-x="0" style="flex: 1 0 0;"></div>
-  <div data-expected-width="300" data-offset-y="180" data-offset-x="150" style="flex: 2 0 0;"></div>
-  <div data-expected-width="150" data-offset-y="180" data-offset-x="450" style="flex: 1 0 0;"></div>
-</div>
-</div>
-
-<div style="position:relative">
-<div class="flexbox bt" style="height:200px">
-  <div data-expected-width="150" data-offset-y="130" data-offset-x="0" style="flex: 1 0 0; margin: 100px 0 50px 0;"></div>
-  <div data-expected-width="300" data-offset-y="180" data-offset-x="150" style="flex: 2 0 0;"></div>
-  <div data-expected-width="150" data-offset-y="180" data-offset-x="450" style="flex: 1 0 0;"></div>
-</div>
-</div>
-
 <div style="position: relative;">
     <div data-expected-width="600" style="direction: rtl; display: flex; margin-left: 10px; margin-right:20px;" class="flexbox">
       <div data-expected-width="75" data-offset-x="535" style="flex: 1 0 0; margin: 0 auto;"></div>