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 ef53fd503dd5e541bc369608b8c3556dd5d90418..c5da19e81bcb309a1c11854f85c23c799d24e7ec 100644
--- a/third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp
+++ b/third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp
@@ -980,16 +980,16 @@ 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;
     }
   }