Implement parseShorthand API for shorthand properties, "overflow", "font" and "font-variant"

third_party/WebKit/Source/core/css/properties/CSSShorthandPropertyAPIFlex.cpp

 // Copyright 2017 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/properties/CSSShorthandPropertyAPIFlex.h"
 
 #include "core/css/CSSIdentifierValue.h"
 #include "core/css/parser/CSSParserContext.h"
 #include "core/css/parser/CSSParserLocalContext.h"
 #include "core/css/parser/CSSPropertyParserHelpers.h"
@@ skipping 58 matching lines @@
           0, CSSPrimitiveValue::UnitType::kPercentage);
     }
   }
 
   if (!range.AtEnd())
     return false;
   CSSPropertyParserHelpers::AddProperty(
       CSSPropertyFlexGrow, CSSPropertyFlex,
       *CSSPrimitiveValue::Create(clampTo<float>(flex_grow),
                                  CSSPrimitiveValue::UnitType::kNumber),
-      important, false /* implicit */, properties);
+      important, CSSPropertyParserHelpers::IsImplicitProperty::kNotImplicit,
+      properties);
   CSSPropertyParserHelpers::AddProperty(
       CSSPropertyFlexShrink, CSSPropertyFlex,
       *CSSPrimitiveValue::Create(clampTo<float>(flex_shrink),
                                  CSSPrimitiveValue::UnitType::kNumber),
-      important, false /* implicit */, properties);
+      important, CSSPropertyParserHelpers::IsImplicitProperty::kNotImplicit,
+      properties);
 
-  CSSPropertyParserHelpers::AddProperty(CSSPropertyFlexBasis, CSSPropertyFlex,
-                                        *flex_basis, important,
-                                        false /* implicit */, properties);
+  CSSPropertyParserHelpers::AddProperty(
+      CSSPropertyFlexBasis, CSSPropertyFlex, *flex_basis, important,
+      CSSPropertyParserHelpers::IsImplicitProperty::kNotImplicit, properties);
 
   return true;
 }
 
 }  // namespace blink