Spec-compliant parsing and initial values for 'orphans' and 'widows'.

third_party/WebKit/Source/core/css/CSSProperties.in

 // This file specifies all the CSS properties we support and the necessary
 // information for our code generation. The various supported arguments
 // are described below with example usage
 
 
 // - alias_for=other-property
 // Properties specifying alias_for should be virtually identical to the
 // properties they alias. Minor parsing differences are allowed as long as
 // the CSSValues created are of the same format of the aliased property.
 
@@ skipping 232 matching lines @@
 min-height interpolable, initial=initialMinSize, converter=convertLengthSizing
 min-width interpolable, initial=initialMinSize, converter=convertLengthSizing
 mix-blend-mode type_name=blink::WebBlendMode, name_for_methods=BlendMode
 motion-offset interpolable, converter=convertLength
 motion-path converter=convertPathOrNone
 motion-rotation interpolable, converter=convertMotionRotation
 object-fit type_name=ObjectFit
 object-position interpolable, converter=convertPosition
 opacity interpolable, type_name=float
 order type_name=int
-orphans interpolable, inherited, type_name=short, custom_all
+orphans interpolable, inherited, type_name=short
 outline-color interpolable, custom_all
 outline-offset interpolable, converter=convertComputedLength<int>
 outline-style custom_all
 outline-width interpolable, converter=convertLineWidth<unsigned short>
 overflow-wrap inherited
 overflow-x type_name=EOverflow
 overflow-y type_name=EOverflow
 padding-bottom interpolable, initial=initialPadding, converter=convertLength
 padding-left interpolable, initial=initialPadding, converter=convertLength
 padding-right interpolable, initial=initialPadding, converter=convertLength
@@ skipping 129 matching lines @@
 -webkit-text-security inherited
 -webkit-text-stroke-color interpolable, inherited, custom_all
 -webkit-text-stroke-width inherited, converter=convertTextStrokeWidth
 -webkit-transform-origin-x interpolable, converter=convertLength
 -webkit-transform-origin-y interpolable, converter=convertLength
 -webkit-transform-origin-z interpolable, converter=convertComputedLength<float>
 -webkit-user-drag
 -webkit-user-modify inherited
 -webkit-user-select inherited
 white-space inherited
-widows interpolable, inherited, type_name=short, custom_all
+widows interpolable, inherited, type_name=short
 width interpolable, initial=initialSize, converter=convertLengthSizing, typedom_types=[Length], keywords=[auto], supports_percentage
 will-change custom_all
 word-break inherited
 word-spacing interpolable, inherited, initial=initialLetterWordSpacing, converter=convertSpacing
 // UAs must treat 'word-wrap' as an alternate name for the 'overflow-wrap' property. So using the same handlers.
 word-wrap inherited, name_for_methods=OverflowWrap
 z-index interpolable, type_name=int, custom_all
 
 // Non-standard direction aware properties
 
@@ skipping 153 matching lines @@
 -webkit-shape-margin alias_for=shape-margin
 -webkit-shape-outside alias_for=shape-outside
 -webkit-transform alias_for=transform
 -webkit-transform-origin alias_for=transform-origin
 -webkit-transform-style alias_for=transform-style
 -webkit-transition alias_for=transition
 -webkit-transition-delay alias_for=transition-delay
 -webkit-transition-duration alias_for=transition-duration
 -webkit-transition-property alias_for=transition-property
 -webkit-transition-timing-function alias_for=transition-timing-function