Delete blink code for scroll-blocks-on

Source/core/css/parser/CSSPropertyParser.cpp

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 Intel Corporation. All rights reserved.
  *
@@ skipping 1496 matching lines @@
         validPrimitive = validUnit(value, FLength | FPercent | FNonNeg);
         break;
     case CSSPropertyShapeImageThreshold:
         validPrimitive = validUnit(value, FNumber);
         break;
 
     case CSSPropertyTouchAction:
         parsedValue = parseTouchAction();
         break;
 
-    case CSSPropertyScrollBlocksOn:
-        if (id == CSSValueNone)
-            validPrimitive = true;
-        else
-            parsedValue = parseScrollBlocksOn();
-        break;
-
     case CSSPropertyAlignContent:
         parsedValue = parseContentDistributionOverflowPosition();
         break;
 
     case CSSPropertyAlignSelf:
         ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled());
         return parseItemPositionOverflowPosition(propId, important);
 
     case CSSPropertyAlignItems:
         ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled());
@@ skipping 5600 matching lines @@
         }
         value = m_valueList->next();
     }
 
     if (list->length())
         return list.release();
 
     return nullptr;
 }
 
-PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseScrollBlocksOn()
-{
-    RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
-    CSSParserValue* value = m_valueList->current();
-    while (value) {
-        switch (value->id) {
-        case CSSValueStartTouch:
-        case CSSValueWheelEvent:
-        case CSSValueScrollEvent: {
-            RefPtrWillBeRawPtr<CSSValue> flagValue = cssValuePool().createIdentifierValue(value->id);
-            if (list->hasValue(flagValue.get()))
-                return nullptr;
-            list->append(flagValue.release());
-            break;
-        }
-        default:
-            return nullptr;
-        }
-        value = m_valueList->next();
-    }
-
-    ASSERT(list->length());
-    return list.release();
-}
-
 PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseTextDecoration()
 {
     CSSParserValue* value = m_valueList->current();
     if (value && value->id == CSSValueNone) {
         m_valueList->next();
         return cssValuePool().createIdentifierValue(CSSValueNone);
     }
 
     RefPtrWillBeRawPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
     bool isValid = true;
@@ skipping 964 matching lines @@
         }
     }
 
     if (!list->length())
         return nullptr;
 
     return list.release();
 }
 
 } // namespace blink