Delete blink code for scroll-blocks-on

Source/core/css/CSSPrimitiveValueMappings.h

Index: Source/core/css/CSSPrimitiveValueMappings.h
diff --git a/Source/core/css/CSSPrimitiveValueMappings.h b/Source/core/css/CSSPrimitiveValueMappings.h
index a8976b8fa00767dfd00e6421e09dc35c1b8ec5d4..0f81c156814dcd17afa521841c72c819973b7cb0 100644
--- a/Source/core/css/CSSPrimitiveValueMappings.h
+++ b/Source/core/css/CSSPrimitiveValueMappings.h
@@ -51,7 +51,6 @@
 #include "platform/text/UnicodeBidi.h"
 #include "platform/text/WritingMode.h"
 #include "public/platform/WebBlendMode.h"
-#include "public/platform/WebScrollBlocksOn.h"
 #include "wtf/MathExtras.h"
 
 namespace blink {
@@ -4334,25 +4333,6 @@ template<> inline CSSPrimitiveValue::operator EIsolation() const
     return IsolationAuto;
 }
 
-template<> inline CSSPrimitiveValue::operator WebScrollBlocksOn() const
-{
-    switch (m_value.valueID) {
-    case CSSValueNone:
-        return WebScrollBlocksOnNone;
-    case CSSValueStartTouch:
-        return WebScrollBlocksOnStartTouch;
-    case CSSValueWheelEvent:
-        return WebScrollBlocksOnWheelEvent;
-    case CSSValueScrollEvent:
-        return WebScrollBlocksOnScrollEvent;
-    default:
-        break;
-    }
-
-    ASSERT_NOT_REACHED();
-    return WebScrollBlocksOnNone;
-}
-
 template<> inline CSSPrimitiveValue::CSSPrimitiveValue(CSSBoxType cssBox)
     : CSSValue(PrimitiveClass)
 {