Changed TextDirection to an enum class and renamed its members

third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp

Index: third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp
diff --git a/third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp b/third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp
index 4bf4f6ecd1f6cc8eb8332b6b202baf6c6022c928..7024ba02f2ed1af06adf6811a8dabe92fb506608 100644
--- a/third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp
+++ b/third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp
@@ -988,16 +988,16 @@ AccessibilityTextDirection AXLayoutObject::textDirection() const {
 
   if (style->isHorizontalWritingMode()) {
     switch (style->direction()) {
-      case LTR:
+      case TextDirection::Ltr:
         return AccessibilityTextDirectionLTR;
-      case RTL:
+      case TextDirection::Rtl:
         return AccessibilityTextDirectionRTL;
     }
   } else {
     switch (style->direction()) {
-      case LTR:
+      case TextDirection::Ltr:
         return AccessibilityTextDirectionTTB;
-      case RTL:
+      case TextDirection::Rtl:
         return AccessibilityTextDirectionBTT;
     }
   }