Refactoring: Remove StyledMarkupAccumulator::appendString and add appendNewLine

Source/core/editing/StyledMarkupAccumulator.cpp

Index: Source/core/editing/StyledMarkupAccumulator.cpp
diff --git a/Source/core/editing/StyledMarkupAccumulator.cpp b/Source/core/editing/StyledMarkupAccumulator.cpp
index f71a0b714b9d72c82bceda1d5c31c0733d10e329..6908b053ed87103d93617d93140d73a9148da23c 100644
--- a/Source/core/editing/StyledMarkupAccumulator.cpp
+++ b/Source/core/editing/StyledMarkupAccumulator.cpp
@@ -49,11 +49,6 @@ StyledMarkupAccumulator::StyledMarkupAccumulator(EAbsoluteURLs shouldResolveURLs
 {
 }
 
-void StyledMarkupAccumulator::appendString(const String& str)
-{
-    m_result.append(str);
-}
-
 void StyledMarkupAccumulator::appendStartTag(Node& node)
 {
     appendStartMarkup(m_result, node);
@@ -202,7 +197,7 @@ void StyledMarkupAccumulator::wrapWithStyleNode(StylePropertySet* style)
     openTag.appendLiteral("\">");
     m_reversedPrecedingMarkup.append(openTag.toString());
 
-    appendString("</div>");
+    m_result.append("</div>");
 }
 
 String StyledMarkupAccumulator::takeResults()
@@ -260,4 +255,10 @@ void StyledMarkupAccumulator::pushMarkup(const String& str)
     m_reversedPrecedingMarkup.append(str);
 }
 
+void StyledMarkupAccumulator::appendInterchangeNewline()
+{
+    DEFINE_STATIC_LOCAL(const String, interchangeNewlineString, ("<br class=\"" AppleInterchangeNewline "\">"));
+    m_result.append(interchangeNewlineString);
+}
+
 } // namespace blink