Added parseShorthand method from the parser to CSSPropertyAPI.h.

third_party/WebKit/Source/core/css/properties/CSSPropertyAPI.h

Index: third_party/WebKit/Source/core/css/properties/CSSPropertyAPI.h
diff --git a/third_party/WebKit/Source/core/css/properties/CSSPropertyAPI.h b/third_party/WebKit/Source/core/css/properties/CSSPropertyAPI.h
index 84593e5b2c0fc498ebb42efe4ebf5f943e6a103b..6db4cff4294d785b02fbacfec40cf476c0ae3432 100644
--- a/third_party/WebKit/Source/core/css/properties/CSSPropertyAPI.h
+++ b/third_party/WebKit/Source/core/css/properties/CSSPropertyAPI.h
@@ -44,6 +44,13 @@ class CSSPropertyAPI {
     NOTREACHED();
     return nullptr;
   }
+
+  static bool parseShorthand(bool,
+                             CSSParserTokenRange&,
+                             const CSSParserContext*) {
+    NOTREACHED();

[sashab, 2017/01/31 22:58:14]

Add similar comment above this :)

[aazzam, 2017/02/01 00:30:05]

added :)

+    return false;
+  }
 };
 
 }  // namespace blink