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

Source/core/css/FontFaceSet.cpp

Index: Source/core/css/FontFaceSet.cpp
diff --git a/Source/core/css/FontFaceSet.cpp b/Source/core/css/FontFaceSet.cpp
index 6f61116886ce53aa0277e4e6510263de054e691e..3030e7ae7c2e1ff64cc1997be974a462380dccb6 100644
--- a/Source/core/css/FontFaceSet.cpp
+++ b/Source/core/css/FontFaceSet.cpp
@@ -504,7 +504,7 @@ bool FontFaceSet::resolveFontStyle(const String& fontString, Font& font)
         return false;
 
     // Interpret fontString in the same way as the 'font' attribute of CanvasRenderingContext2D.
-    RefPtrWillBeRawPtr<MutableStylePropertySet> parsedStyle = MutableStylePropertySet::create();
+    RefPtrWillBeRawPtr<MutableStylePropertySet> parsedStyle = MutableStylePropertySet::create(HTMLQuirksMode);
     CSSParser::parseValue(parsedStyle.get(), CSSPropertyFont, fontString, true, HTMLStandardMode, 0);
     if (parsedStyle->isEmpty())
         return false;