Using Enum in place of bool for better code readability

Source/core/editing/EditingStyle.h

Index: Source/core/editing/EditingStyle.h
diff --git a/Source/core/editing/EditingStyle.h b/Source/core/editing/EditingStyle.h
index c9aca38f0372140a4d5c990a4edf525abb6f429c..d11e640fc60659e8d2dcf039317695d084b4ee61 100644
--- a/Source/core/editing/EditingStyle.h
+++ b/Source/core/editing/EditingStyle.h
@@ -35,6 +35,7 @@
 #include "core/CSSPropertyNames.h"
 #include "core/CSSValueKeywords.h"
 #include "core/editing/WritingDirection.h"
+#include "platform/fonts/FixedPitchFontType.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
 #include "wtf/RefCounted.h"
@@ -160,7 +161,7 @@ private:
     void mergeStyle(const StylePropertySet*, CSSPropertyOverrideMode);
 
     RefPtrWillBeMember<MutableStylePropertySet> m_mutableStyle;
-    bool m_shouldUseFixedDefaultFontSize;
+    FixedPitchFontType m_fixedPitchFontType;
     float m_fontSizeDelta;
 
     friend class HTMLElementEquivalent;
@@ -213,7 +214,7 @@ public:
         return !(*this == other);
     }
 private:
-    void extractTextStyles(Document*, MutableStylePropertySet*, bool shouldUseFixedFontDefaultSize);
+    void extractTextStyles(Document*, MutableStylePropertySet*, FixedPitchFontType);
 
     String m_cssStyle;
     bool m_applyBold;