[Typed-OM] Get CSSTokenStreamValue from StyleMap

third_party/WebKit/Source/core/css/cssom/StyleValueFactory.cpp

Index: third_party/WebKit/Source/core/css/cssom/StyleValueFactory.cpp
diff --git a/third_party/WebKit/Source/core/css/cssom/StyleValueFactory.cpp b/third_party/WebKit/Source/core/css/cssom/StyleValueFactory.cpp
index 457f589a8a1342fee8475b1b7f14fe3d446f4ff8..2d5dd5a0a2a2d6e4db9076cc6a5d383a1faa0903 100644
--- a/third_party/WebKit/Source/core/css/cssom/StyleValueFactory.cpp
+++ b/third_party/WebKit/Source/core/css/cssom/StyleValueFactory.cpp
@@ -8,6 +8,8 @@
 #include "core/css/cssom/CSSNumberValue.h"
 #include "core/css/cssom/CSSSimpleLength.h"
 #include "core/css/cssom/CSSStyleValue.h"
+#include "core/css/cssom/CSSStyleVariableReferenceValue.h"
+#include "core/css/cssom/CSSTokenStreamValue.h"
 #include "core/css/cssom/CSSTransformValue.h"
 #include "core/css/cssom/CSSUnsupportedStyleValue.h"
 
@@ -33,6 +35,10 @@ CSSStyleValue* styleValueForProperty(CSSPropertyID propertyID, const CSSValue& v
             return CSSNumberValue::create(primitiveValue.getDoubleValue());
     }
 
+    if (value.isVariableReferenceValue()) {
+        return CSSTokenStreamValue::fromCSSValue(toCSSVariableReferenceValue(value));
+    }
+
     return nullptr;
 }