Refactoring: Replace boolean parameters with enum classes

Source/core/editing/StyledMarkupAccumulator.h

Index: Source/core/editing/StyledMarkupAccumulator.h
diff --git a/Source/core/editing/StyledMarkupAccumulator.h b/Source/core/editing/StyledMarkupAccumulator.h
index c2555acb08196f748f49b0e35e93e9565556726c..226a75db8f6a777cdbeb5f9753cddfad22903b49 100644
--- a/Source/core/editing/StyledMarkupAccumulator.h
+++ b/Source/core/editing/StyledMarkupAccumulator.h
@@ -40,12 +40,25 @@ class Document;
 class StylePropertySet;
 class Text;
 
+enum class RangeFullySelectsNode {
+    DoesSelect,
+    DoesNotSelect,
+};
+
+enum class StyleTagType {
+    Block,
+    Inline,
+};
+
+enum class AddDisplayInline {
+    DoesAdd,
+    DoesNotAdd,
+};
+
 class StyledMarkupAccumulator final {
     WTF_MAKE_NONCOPYABLE(StyledMarkupAccumulator);
     STACK_ALLOCATED();
 public:
-    enum RangeFullySelectsNode { DoesFullySelectNode, DoesNotFullySelectNode };
-
     StyledMarkupAccumulator(EAbsoluteURLs, const TextOffset& start, const TextOffset& end, const PassRefPtrWillBeRawPtr<Document>, EAnnotateForInterchange, Node*);
 
     void appendString(const String&);
@@ -55,8 +68,8 @@ public:
     void appendEndMarkup(StringBuilder&, const Element&);
 
     void appendElement(StringBuilder&, Element&, Namespaces*);
-    void appendElement(StringBuilder&, Element&, bool, RangeFullySelectsNode);
-    void appendStyleNodeOpenTag(StringBuilder&, StylePropertySet*, bool isBlock = false);
+    void appendElement(StringBuilder&, Element&, AddDisplayInline, RangeFullySelectsNode);
+    void appendStyleNodeOpenTag(StringBuilder&, StylePropertySet*, StyleTagType = StyleTagType::Inline);
 
     // TODO(hajimehoshi): These functions are called from the serializer, but
     // should not.