Changed EPosition to an enum class and renamed its members

third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp

Index: third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp
diff --git a/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp b/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp
index 445c595b44494fdbe577d5a7e7666be82f5e91ef..34b7942e959e2e6c6f757736832a8ca09f7c4a95 100644
--- a/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp
+++ b/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp
@@ -880,12 +880,12 @@ void PaintPropertyTreeBuilder::updateContextForBoxPosition(
     context.current.paintOffset = boxModelObject.container()->paintOffset();
 
   switch (object.styleRef().position()) {
-    case StaticPosition:
+    case EPosition::kStatic:
       break;
-    case RelativePosition:
+    case EPosition::kRelative:
       context.current.paintOffset += boxModelObject.offsetForInFlowPosition();
       break;
-    case AbsolutePosition: {
+    case EPosition::kAbsolute: {
       DCHECK(context.containerForAbsolutePosition ==
              boxModelObject.container());
       context.current = context.absolutePosition;
@@ -902,10 +902,10 @@ void PaintPropertyTreeBuilder::updateContextForBoxPosition(
       }
       break;
     }
-    case StickyPosition:
+    case EPosition::kSticky:
       context.current.paintOffset += boxModelObject.offsetForInFlowPosition();
       break;
-    case FixedPosition:
+    case EPosition::kFixed:
       context.current = context.fixedPosition;
       break;
     default: