Use fastGetAttribute in more places

Source/core/html/HTMLTableCellElement.cpp

Index: Source/core/html/HTMLTableCellElement.cpp
diff --git a/Source/core/html/HTMLTableCellElement.cpp b/Source/core/html/HTMLTableCellElement.cpp
index 050b3f6142383145445bb16075feb448a694c6a1..833196300d642ccc56aba1d06a0409662caf94d3 100644
--- a/Source/core/html/HTMLTableCellElement.cpp
+++ b/Source/core/html/HTMLTableCellElement.cpp
@@ -132,12 +132,12 @@ bool HTMLTableCellElement::isURLAttribute(const Attribute& attribute) const
 
 const AtomicString& HTMLTableCellElement::abbr() const
 {
-    return getAttribute(abbrAttr);
+    return fastGetAttribute(abbrAttr);
 }
 
 const AtomicString& HTMLTableCellElement::axis() const
 {
-    return getAttribute(axisAttr);
+    return fastGetAttribute(axisAttr);
 }
 
 void HTMLTableCellElement::setColSpan(int n)
@@ -147,7 +147,7 @@ void HTMLTableCellElement::setColSpan(int n)
 
 const AtomicString& HTMLTableCellElement::headers() const
 {
-    return getAttribute(headersAttr);
+    return fastGetAttribute(headersAttr);
 }
 
 void HTMLTableCellElement::setRowSpan(int n)
@@ -157,7 +157,7 @@ void HTMLTableCellElement::setRowSpan(int n)
 
 const AtomicString& HTMLTableCellElement::scope() const
 {
-    return getAttribute(scopeAttr);
+    return fastGetAttribute(scopeAttr);
 }
 
 HTMLTableCellElement* HTMLTableCellElement::cellAbove() const