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

third_party/WebKit/Source/core/style/ComputedStyle.cpp

Index: third_party/WebKit/Source/core/style/ComputedStyle.cpp
diff --git a/third_party/WebKit/Source/core/style/ComputedStyle.cpp b/third_party/WebKit/Source/core/style/ComputedStyle.cpp
index 6cef0714c8c54393249ab3155b0119353ac869b3..222c33205baa930c3adfa2e98fbc00881dbdb0b1 100644
--- a/third_party/WebKit/Source/core/style/ComputedStyle.cpp
+++ b/third_party/WebKit/Source/core/style/ComputedStyle.cpp
@@ -1533,8 +1533,6 @@ const BorderValue& ComputedStyle::borderBefore() const
     switch (writingMode()) {
     case TopToBottomWritingMode:
         return borderTop();
-    case BottomToTopWritingMode:
-        return borderBottom();
     case LeftToRightWritingMode:
         return borderLeft();
     case RightToLeftWritingMode:
@@ -1549,8 +1547,6 @@ const BorderValue& ComputedStyle::borderAfter() const
     switch (writingMode()) {
     case TopToBottomWritingMode:
         return borderBottom();
-    case BottomToTopWritingMode:
-        return borderTop();
     case LeftToRightWritingMode:
         return borderRight();
     case RightToLeftWritingMode:
@@ -1579,8 +1575,6 @@ int ComputedStyle::borderBeforeWidth() const
     switch (writingMode()) {
     case TopToBottomWritingMode:
         return borderTopWidth();
-    case BottomToTopWritingMode:
-        return borderBottomWidth();
     case LeftToRightWritingMode:
         return borderLeftWidth();
     case RightToLeftWritingMode:
@@ -1595,8 +1589,6 @@ int ComputedStyle::borderAfterWidth() const
     switch (writingMode()) {
     case TopToBottomWritingMode:
         return borderBottomWidth();
-    case BottomToTopWritingMode:
-        return borderTopWidth();
     case LeftToRightWritingMode:
         return borderRightWidth();
     case RightToLeftWritingMode: