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

Source/core/editing/Editor.cpp

Index: Source/core/editing/Editor.cpp
diff --git a/Source/core/editing/Editor.cpp b/Source/core/editing/Editor.cpp
index cbfebe7732840b7a0a9d26fbbef22a278e246483..0ef9df287ad81f90f9b2c5ba1318bb18be8cf662 100644
--- a/Source/core/editing/Editor.cpp
+++ b/Source/core/editing/Editor.cpp
@@ -999,7 +999,7 @@ void Editor::setBaseWritingDirection(WritingDirection direction)
         return;
     }
 
-    RefPtrWillBeRawPtr<MutableStylePropertySet> style = MutableStylePropertySet::create();
+    RefPtrWillBeRawPtr<MutableStylePropertySet> style = MutableStylePropertySet::create(HTMLQuirksMode);
     style->setProperty(CSSPropertyDirection, direction == LeftToRightWritingDirection ? "ltr" : direction == RightToLeftWritingDirection ? "rtl" : "inherit", false);
     applyParagraphStyleToSelection(style.get(), EditActionSetWritingDirection);
 }