Moved overflow-x and overflow-y to be generated in ComputedStyleBase.

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 18e5f8c6ba02ff6ed358d8ba579767ba9c8d97b2..d344d04201df75ff1124c6318167741dced9ebd8 100644
--- a/third_party/WebKit/Source/core/style/ComputedStyleConstants.h
+++ b/third_party/WebKit/Source/core/style/ComputedStyleConstants.h
@@ -145,16 +145,6 @@ enum class EBoxSizing : unsigned { kContentBox, kBorderBox };
 
 // Random visual rendering model attributes. Not inherited.
 
-enum class EOverflow : unsigned {
-  kVisible,
-  kHidden,
-  kScroll,
-  kAuto,
-  kOverlay,
-  kWebkitPagedX,
-  kWebkitPagedY
-};
-
 enum class EVerticalAlign : unsigned {
   kBaseline,
   kMiddle,