[css-align] Adapt content-alignment properties to the new baseline syntax

third_party/WebKit/Source/core/css/properties/CSSPropertyAPIAlignOrJustifyContent.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/CSSPropertyAPIAlignOrJustifyContent.h"
 
-namespace blink {}  // namespace blink
+#include "core/css/properties/CSSPropertyAlignmentUtils.h"
+#include "platform/RuntimeEnabledFeatures.h"
+
+namespace blink {
+
+const CSSValue* CSSPropertyAPIAlignOrJustifyContent::parseSingleValue(
+    CSSParserTokenRange& range,
+    const CSSParserContext* context) {
+  DCHECK(RuntimeEnabledFeatures::cssGridLayoutEnabled());
+  return CSSPropertyAlignmentUtils::consumeContentDistributionOverflowPosition(
+      range);
+}
+
+}  // namespace blink