Make CSSParserMode parameter not optional for MutableStylePropertySet::create()

Source/core/animation/LengthStyleInterpolationTest.cpp

Index: Source/core/animation/LengthStyleInterpolationTest.cpp
diff --git a/Source/core/animation/LengthStyleInterpolationTest.cpp b/Source/core/animation/LengthStyleInterpolationTest.cpp
index 9117139cb1b97f7bf480f14467738dc2b8fb94de..586301e94de01220ba9253bcf352e98e2bf95ece 100644
--- a/Source/core/animation/LengthStyleInterpolationTest.cpp
+++ b/Source/core/animation/LengthStyleInterpolationTest.cpp
@@ -57,7 +57,7 @@ protected:
     {
         CSSPrimitiveValue::CSSLengthTypeArray lengthTypeArray;
         initLengthArray(lengthArray);
-        RefPtrWillBeRawPtr<MutableStylePropertySet> propertySet = MutableStylePropertySet::create();
+        RefPtrWillBeRawPtr<MutableStylePropertySet> propertySet = MutableStylePropertySet::create(HTMLQuirksMode);
         propertySet->setProperty(CSSPropertyLeft, text);
         toCSSPrimitiveValue(propertySet->getPropertyCSSValue(CSSPropertyLeft).get())->accumulateLengthArray(lengthArray);
         return lengthArray;