Make SelectionState enum class

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

Index: third_party/WebKit/Source/core/paint/BoxClipper.cpp
diff --git a/third_party/WebKit/Source/core/paint/BoxClipper.cpp b/third_party/WebKit/Source/core/paint/BoxClipper.cpp
index dd368f7e740716b53c47468b76ebcd9bafdecee6..eff3427db7279a36fa1264a16c70d9fca82f58d5 100644
--- a/third_party/WebKit/Source/core/paint/BoxClipper.cpp
+++ b/third_party/WebKit/Source/core/paint/BoxClipper.cpp
@@ -70,7 +70,7 @@ BoxClipper::BoxClipper(const LayoutBox& box,
   // Selection may extend beyond visual overflow, so this optimization is
   // invalid if selection is present.
   if (contents_clip_behavior == kSkipContentsClipIfPossible &&
-      box.GetSelectionState() == SelectionNone) {
+      box.GetSelectionState() == SelectionState::kNone) {
     LayoutRect contents_visual_overflow = box_.ContentsVisualOverflowRect();
     if (contents_visual_overflow.IsEmpty())
       return;