Remove unused createdByParser flags and arguments.

third_party/WebKit/Source/core/xml/parser/XMLDocumentParser.cpp

Index: third_party/WebKit/Source/core/xml/parser/XMLDocumentParser.cpp
diff --git a/third_party/WebKit/Source/core/xml/parser/XMLDocumentParser.cpp b/third_party/WebKit/Source/core/xml/parser/XMLDocumentParser.cpp
index 4f4869917e785f7345b73ff31324900d6d8a4ecf..72877f026ee0735c23798161c64a4dfcee5bbc02 100644
--- a/third_party/WebKit/Source/core/xml/parser/XMLDocumentParser.cpp
+++ b/third_party/WebKit/Source/core/xml/parser/XMLDocumentParser.cpp
@@ -1210,12 +1210,8 @@ void XMLDocumentParser::processingInstruction(const String& target, const String
     if (exceptionState.hadException())
         return;
 
-    pi->setCreatedByParser(true);
-
     m_currentNode->parserAppendChild(pi.get());
 
-    pi->setCreatedByParser(false);
-
     if (pi->isCSS())
         m_sawCSS = true;