Removed CSSPropertyAPIShadow group property stub

third_party/WebKit/Source/core/css/CSSProperties.json5

 {
 // 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
 
   parameters: {
     // - 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 1944 matching lines @@
       inherited: true,
       runtime_flag: "CSS3Text",
       type_name: "TextJustify",
     },
     {
       name: "text-overflow",
       type_name: "TextOverflow",
     },
     {
       name: "text-shadow",
-      api_class: "CSSPropertyAPIShadow",
       converter: "ConvertShadowList",
       inherited: true,
       interpolable: true,
     },
     {
       name: "text-size-adjust",
       api_class: true,
       api_methods: ["parseSingleValue"],
       converter: "ConvertTextSizeAdjust",
       inherited: true,
@@ skipping 1143 matching lines @@
     {
       name: "-webkit-border-top-left-radius",
       alias_for: "border-top-left-radius",
     },
     {
       name: "-webkit-border-top-right-radius",
       alias_for: "border-top-right-radius",
     },
     {
       name: "-webkit-box-shadow",
-      api_class: "CSSPropertyAPIShadow",
       alias_for: "box-shadow",
     },
     {
       name: "-webkit-box-sizing",
       alias_for: "box-sizing",
     },
     {
       name: "-webkit-clip-path",
       alias_for: "clip-path",
     },
@@ skipping 141 matching lines @@
     {
       name: "-webkit-transition-timing-function",
       alias_for: "transition-timing-function",
     },
     {
       name: "-webkit-user-select",
       alias_for: "user-select",
     },
   ],
 }