Add number() static methods to AtomicString class

Source/core/html/HTMLTextAreaElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2007 Samuel Weinig (sam@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 415 matching lines @@
     bool ok;
     int value = getAttribute(maxlengthAttr).string().toInt(&ok);
     return ok && value >= 0 ? value : -1;
 }
 
 void HTMLTextAreaElement::setMaxLength(int newValue, ExceptionState& exceptionState)
 {
     if (newValue < 0)
         exceptionState.throwUninformativeAndGenericDOMException(IndexSizeError);
     else
-        setAttribute(maxlengthAttr, String::number(newValue));
+        setIntegralAttribute(maxlengthAttr, newValue);
 }
 
 String HTMLTextAreaElement::validationMessage() const
 {
     if (!willValidate())
         return String();
 
     if (customError())
         return customValidationMessage();
 
@@ skipping 34 matching lines @@
     return !valueMissing(candidate) && !tooLong(candidate, IgnoreDirtyFlag);
 }
 
 void HTMLTextAreaElement::accessKeyAction(bool)
 {
     focus();
 }
 
 void HTMLTextAreaElement::setCols(int cols)
 {
-    setAttribute(colsAttr, String::number(cols));
+    setIntegralAttribute(colsAttr, cols);
 }
 
 void HTMLTextAreaElement::setRows(int rows)
 {
-    setAttribute(rowsAttr, String::number(rows));
+    setIntegralAttribute(rowsAttr, rows);
 }
 
 bool HTMLTextAreaElement::shouldUseInputMethod()
 {
     return true;
 }
 
 bool HTMLTextAreaElement::matchesReadOnlyPseudoClass() const
 {
     return isReadOnly();
@@ skipping 22 matching lines @@
     }
     placeholder->setTextContent(placeholderText, ASSERT_NO_EXCEPTION);
 }
 
 bool HTMLTextAreaElement::isInteractiveContent() const
 {
     return true;
 }
 
 }