Revert of Remove StringBuilder::appendLiteral.

third_party/WebKit/Source/platform/PODInterval.h

Index: third_party/WebKit/Source/platform/PODInterval.h
diff --git a/third_party/WebKit/Source/platform/PODInterval.h b/third_party/WebKit/Source/platform/PODInterval.h
index ee554c7c051c539edbf38c12c2d774ffead1cddc..68307e2759d65448f13fcdaba3ac78708444a642 100644
--- a/third_party/WebKit/Source/platform/PODInterval.h
+++ b/third_party/WebKit/Source/platform/PODInterval.h
@@ -142,13 +142,13 @@
     String toString() const
     {
         StringBuilder builder;
-        builder.append("[PODInterval (");
+        builder.appendLiteral("[PODInterval (");
         builder.append(ValueToString<T>::toString(low()));
-        builder.append(", ");
+        builder.appendLiteral(", ");
         builder.append(ValueToString<T>::toString(high()));
-        builder.append("), data=");
+        builder.appendLiteral("), data=");
         builder.append(ValueToString<UserData>::toString(data()));
-        builder.append(", maxHigh=");
+        builder.appendLiteral(", maxHigh=");
         builder.append(ValueToString<T>::toString(maxHigh()));
         builder.append(']');
         return builder.toString();