Get rid of custom code for HTMLLinkElement.sizes attribute setter

Source/core/html/HTMLLinkElement.cpp

Index: Source/core/html/HTMLLinkElement.cpp
diff --git a/Source/core/html/HTMLLinkElement.cpp b/Source/core/html/HTMLLinkElement.cpp
index 218194c85f41199c65528359dc233bfce83e139e..3fa28a1e05fa50740ca44861f6483aa9ded7be4b 100644
--- a/Source/core/html/HTMLLinkElement.cpp
+++ b/Source/core/html/HTMLLinkElement.cpp
@@ -96,7 +96,7 @@ void HTMLLinkElement::parseAttribute(const QualifiedName& name, const AtomicStri
         m_type = value;
         process();
     } else if (name == sizesAttr) {
-        setSizes(value);
+        m_sizes->setValue(value);
         process();
     } else if (name == mediaAttr) {
         m_media = value.string().lower();
@@ -365,12 +365,6 @@ DOMSettableTokenList* HTMLLinkElement::sizes() const
     return m_sizes.get();
 }
 
-void HTMLLinkElement::setSizes(const String& value)
-{
-    m_sizes->setValue(value);
-}
-
-
 PassRefPtr<LinkStyle> LinkStyle::create(HTMLLinkElement* owner)
 {
     return adoptRef(new LinkStyle(owner));