Make exceptionState parameter of Document::createElement() to have default value

third_party/WebKit/Source/core/dom/Document.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
@@ skipping 308 matching lines @@
 
   DOMImplementation& implementation();
 
   Element* documentElement() const { return m_documentElement.get(); }
 
   // Returns whether the Document has an AppCache manifest.
   bool hasAppCacheManifest() const;
 
   Location* location() const;
 
-  Element* createElement(const AtomicString& name, ExceptionState&);
+  Element* createElement(const AtomicString& name,
+                         ExceptionState& = ASSERT_NO_EXCEPTION);
   DocumentFragment* createDocumentFragment();
   Text* createTextNode(const String& data);
   Comment* createComment(const String& data);
   CDATASection* createCDATASection(const String& data, ExceptionState&);
   ProcessingInstruction* createProcessingInstruction(const String& target,
                                                      const String& data,
                                                      ExceptionState&);
   Attr* createAttribute(const AtomicString& name, ExceptionState&);
   Attr* createAttributeNS(const AtomicString& namespaceURI,
                           const AtomicString& qualifiedName,
@@ skipping 792 matching lines @@
   void exceptionThrown(ErrorEvent*) final;
 
   void initDNSPrefetch();
 
   bool isInDocumentWrite() const { return m_writeRecursionDepth > 0; }
 
   TextAutosizer* textAutosizer();
 
   Element* createElement(const AtomicString& localName,
                          const StringOrDictionary&,
-                         ExceptionState&);
+                         ExceptionState& = ASSERT_NO_EXCEPTION);
   Element* createElementNS(const AtomicString& namespaceURI,
                            const AtomicString& qualifiedName,
                            const StringOrDictionary&,
                            ExceptionState&);
   ScriptValue registerElement(
       ScriptState*,
       const AtomicString& name,
       const ElementRegistrationOptions&,
       ExceptionState&,
       V0CustomElement::NameSet validNames = V0CustomElement::StandardNames);
@@ skipping 564 matching lines @@
 DEFINE_TYPE_CASTS(TreeScope, Document, document, true, true);
 
 }  // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 CORE_EXPORT void showLiveDocumentInstances();
 #endif
 
 #endif  // Document_h