Ensure original parser context is used when parsing resolved var() references

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

Index: third_party/WebKit/Source/core/css/cssom/CSSUnparsedValue.cpp
diff --git a/third_party/WebKit/Source/core/css/cssom/CSSUnparsedValue.cpp b/third_party/WebKit/Source/core/css/cssom/CSSUnparsedValue.cpp
index 7c48f2ac3930c04231becd3b80ea5b50c9f1bdfa..4c29033f3f394459e4664b96495cb6eeb1975558 100644
--- a/third_party/WebKit/Source/core/css/cssom/CSSUnparsedValue.cpp
+++ b/third_party/WebKit/Source/core/css/cssom/CSSUnparsedValue.cpp
@@ -87,9 +87,13 @@ CSSValue* CSSUnparsedValue::ToCSSValue() const {
   }
 
   CSSTokenizer tokenizer(tokens.ToString());
-  return CSSVariableReferenceValue::Create(CSSVariableData::Create(
-      tokenizer.TokenRange(), false /* isAnimationTainted */,
-      true /* needsVariableResolution */));
+  // TODO(alancutter): This should be using a real parser context instead of
+  // StrictCSSParserContext.
+  return CSSVariableReferenceValue::Create(
+      CSSVariableData::Create(tokenizer.TokenRange(),
+                              false /* isAnimationTainted */,
+                              true /* needsVariableResolution */),
+      *StrictCSSParserContext());
 }
 
 }  // namespace blink