Implement the overflow-anchor CSS property as an opt-out for ScrollAnchoring

third_party/WebKit/Source/core/css/parser/CSSParserFastPaths.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/css/parser/CSSParserFastPaths.h"
 
 #include "core/StylePropertyShorthand.h"
 #include "core/css/CSSColorValue.h"
 #include "core/css/CSSFunctionValue.h"
 #include "core/css/CSSInheritedValue.h"
@@ skipping 532 matching lines @@
     case CSSPropertyListStyleType:
         // See section CSS_PROP_LIST_STYLE_TYPE of file CSSValueKeywords.in
         // for the list of supported list-style-types.
         return (valueID >= CSSValueDisc && valueID <= CSSValueKatakanaIroha) || valueID == CSSValueNone;
     case CSSPropertyMaskType:
         return valueID == CSSValueLuminance || valueID == CSSValueAlpha;
     case CSSPropertyObjectFit:
         return valueID == CSSValueFill || valueID == CSSValueContain || valueID == CSSValueCover || valueID == CSSValueNone || valueID == CSSValueScaleDown;
     case CSSPropertyOutlineStyle: // (<border-style> except hidden) | auto
         return valueID == CSSValueAuto || valueID == CSSValueNone || (valueID >= CSSValueInset && valueID <= CSSValueDouble);
+    case CSSPropertyOverflowAnchor:
+        return valueID == CSSValueVisible || valueID == CSSValueNone || valueID == CSSValueAuto;
     case CSSPropertyOverflowWrap: // normal | break-word
     case CSSPropertyWordWrap:
         return valueID == CSSValueNormal || valueID == CSSValueBreakWord;
     case CSSPropertyOverflowX: // visible | hidden | scroll | auto | overlay
         return valueID == CSSValueVisible || valueID == CSSValueHidden || valueID == CSSValueScroll || valueID == CSSValueAuto || valueID == CSSValueOverlay;
     case CSSPropertyOverflowY: // visible | hidden | scroll | auto | overlay | -webkit-paged-x | -webkit-paged-y
         return valueID == CSSValueVisible || valueID == CSSValueHidden || valueID == CSSValueScroll || valueID == CSSValueAuto || valueID == CSSValueOverlay || valueID == CSSValueWebkitPagedX || valueID == CSSValueWebkitPagedY;
     case CSSPropertyBreakAfter:
     case CSSPropertyBreakBefore:
         return valueID == CSSValueAuto || valueID == CSSValueAvoid || valueID == CSSValueAvoidPage || valueID == CSSValuePage || valueID == CSSValueLeft || valueID == CSSValueRight || valueID == CSSValueRecto || valueID == CSSValueVerso || valueID == CSSValueAvoidColumn || valueID == CSSValueColumn;
@@ skipping 180 matching lines @@
     case CSSPropertyFloat:
     case CSSPropertyFontStyle:
     case CSSPropertyFontStretch:
     case CSSPropertyHyphens:
     case CSSPropertyImageRendering:
     case CSSPropertyListStylePosition:
     case CSSPropertyListStyleType:
     case CSSPropertyMaskType:
     case CSSPropertyObjectFit:
     case CSSPropertyOutlineStyle:
+    case CSSPropertyOverflowAnchor:
     case CSSPropertyOverflowWrap:
     case CSSPropertyOverflowX:
     case CSSPropertyOverflowY:
     case CSSPropertyBreakAfter:
     case CSSPropertyBreakBefore:
     case CSSPropertyBreakInside:
     case CSSPropertyPointerEvents:
     case CSSPropertyPosition:
     case CSSPropertyResize:
     case CSSPropertyScrollBehavior:
@@ skipping 312 matching lines @@
     if (isColorPropertyID(propertyID))
         return parseColor(string, parserMode);
     if (CSSValue* keyword = parseKeywordValue(propertyID, string, parserMode))
         return keyword;
     if (CSSValue* transform = parseSimpleTransform(propertyID, string))
         return transform;
     return nullptr;
 }
 
 } // namespace blink