Add expansion of shorthands with custom properties to longhands using a pending substition value.

third_party/WebKit/Source/core/css/resolver/StyleResolverState.cpp

Index: third_party/WebKit/Source/core/css/resolver/StyleResolverState.cpp
diff --git a/third_party/WebKit/Source/core/css/resolver/StyleResolverState.cpp b/third_party/WebKit/Source/core/css/resolver/StyleResolverState.cpp
index 6fc6c070d179659be1265f482642ca16d1119922..43bc7c68aa71fa66f36efe9d151e39fa99ebee79 100644
--- a/third_party/WebKit/Source/core/css/resolver/StyleResolverState.cpp
+++ b/third_party/WebKit/Source/core/css/resolver/StyleResolverState.cpp
@@ -86,4 +86,14 @@ StylePropertySet* StyleResolverState::customPropertySetForApplyAtRule(const Stri
     return m_customPropertySetsForApplyAtRule.get(string);
 }
 
+HeapHashMap<CSSPropertyID, Member<const CSSValue>>& StyleResolverState::parsedPropertiesForPendingSubstitution(const CSSValue& psv)

[Timothy Loh, 2016/06/27 04:19:10]

no abbreviations in blink :)

[Andy Mutton, 2016/06/28 03:18:51]

Done.

+{
+    HeapHashMap<CSSPropertyID, Member<const CSSValue>>* map = m_parsedPropertiesForPendingSubstitution.get(&psv);
+    if (!map) {
+        map = new HeapHashMap<CSSPropertyID, Member<const CSSValue>>;
+        m_parsedPropertiesForPendingSubstitution.set(&psv, map);
+    }
+    return *map;
+}
+
 } // namespace blink