Rename EDisplay values with k prefix.

third_party/WebKit/Source/core/layout/LayoutScrollbar.cpp

Index: third_party/WebKit/Source/core/layout/LayoutScrollbar.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutScrollbar.cpp b/third_party/WebKit/Source/core/layout/LayoutScrollbar.cpp
index 246e8de7ecf84de884e772cc8cce2882717b1549..6670d076c1d3bd366faceb1231ad39d083dd57da 100644
--- a/third_party/WebKit/Source/core/layout/LayoutScrollbar.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutScrollbar.cpp
@@ -228,9 +228,9 @@ void LayoutScrollbar::updateScrollbarPart(ScrollbarPart partType,
           : PassRefPtr<ComputedStyle>(nullptr);
 
   bool needLayoutObject =
-      !destroy && partStyle && partStyle->display() != EDisplay::None;
+      !destroy && partStyle && partStyle->display() != EDisplay::kNone;
 
-  if (needLayoutObject && partStyle->display() != EDisplay::Block) {
+  if (needLayoutObject && partStyle->display() != EDisplay::kBlock) {
     // See if we are a button that should not be visible according to OS
     // settings.
     WebScrollbarButtonsPlacement buttonsPlacement = theme().buttonsPlacement();