Basic implementation of @apply

third_party/WebKit/Source/core/css/CSSVariableData.cpp

Index: third_party/WebKit/Source/core/css/CSSVariableData.cpp
diff --git a/third_party/WebKit/Source/core/css/CSSVariableData.cpp b/third_party/WebKit/Source/core/css/CSSVariableData.cpp
index 75134d96fb3e6a8049893a2d489e8bd525513668..30c6d9c6b15e5d66f12ebce721d242ef9169046a 100644
--- a/third_party/WebKit/Source/core/css/CSSVariableData.cpp
+++ b/third_party/WebKit/Source/core/css/CSSVariableData.cpp
@@ -4,11 +4,22 @@
 
 #include "core/css/CSSVariableData.h"
 
+#include "core/css/parser/CSSParser.h"
 #include "core/css/parser/CSSParserTokenRange.h"
 #include "wtf/text/StringBuilder.h"
 
 namespace blink {
 
+const StylePropertySet* CSSVariableData::propertySet()
+{
+    ASSERT(!m_needsVariableResolution);
+    if (!m_cachedPropertySet) {
+        m_propertySet = CSSParser::parseCustomPropertySet(m_tokens);
+        m_cachedPropertySet = true;
+    }
+    return m_propertySet.get();
+}
+
 template<typename CharacterType> void CSSVariableData::updateTokens(const CSSParserTokenRange& range)
 {
     const CharacterType* currentOffset = m_backingString.getCharacters<CharacterType>();
@@ -55,6 +66,7 @@ void CSSVariableData::consumeAndUpdateTokens(const CSSParserTokenRange& range)
 
 CSSVariableData::CSSVariableData(const CSSParserTokenRange& range, bool needsVariableResolution)
     : m_needsVariableResolution(needsVariableResolution)
+    , m_cachedPropertySet(false)
 {
     ASSERT(!range.atEnd());
     consumeAndUpdateTokens(range);