Make EFlexWrap an enum class.

third_party/WebKit/Source/core/style/ComputedStyleConstants.h

Index: third_party/WebKit/Source/core/style/ComputedStyleConstants.h
diff --git a/third_party/WebKit/Source/core/style/ComputedStyleConstants.h b/third_party/WebKit/Source/core/style/ComputedStyleConstants.h
index 4f52a198cdf3250c87d6f0fd95a08e10ed4dc5f5..629009000baf5555da45fff242eb532c54dd6428 100644
--- a/third_party/WebKit/Source/core/style/ComputedStyleConstants.h
+++ b/third_party/WebKit/Source/core/style/ComputedStyleConstants.h
@@ -151,7 +151,7 @@ enum EMaskSourceType { kMaskAlpha, kMaskLuminance };
 // CSS3 Flexbox Properties
 
 enum class EFlexDirection { kRow, kRowReverse, kColumn, kColumnReverse };
-enum EFlexWrap { kFlexNoWrap, kFlexWrap, kFlexWrapReverse };
+enum class EFlexWrap { kNowrap, kWrap, kWrapReverse };
 
 // CSS3 Image Values
 enum QuoteType { OPEN_QUOTE, CLOSE_QUOTE, NO_OPEN_QUOTE, NO_CLOSE_QUOTE };