Move code in some attributeChanged overrides to parseAttribute.

third_party/WebKit/Source/core/html/HTMLButtonElement.cpp

Index: third_party/WebKit/Source/core/html/HTMLButtonElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLButtonElement.cpp b/third_party/WebKit/Source/core/html/HTMLButtonElement.cpp
index 0ee295bef4c1701b21233454fc538b7d5eddaf1f..0d81d0ed6422a3c6ec83ab2d277a91f6f8831b05 100644
--- a/third_party/WebKit/Source/core/html/HTMLButtonElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLButtonElement.cpp
@@ -103,6 +103,8 @@ void HTMLButtonElement::parseAttribute(const QualifiedName& name, const AtomicSt
             m_type = SUBMIT;
         setNeedsWillValidateCheck();
     } else {
+        if (name == formactionAttr)
+            logEventIfIsolatedWorldAndInDocument("blinkSetAttribute", "button", formactionAttr.toString(), oldValue, value);
         HTMLFormControlElement::parseAttribute(name, oldValue, value);
     }
 }
@@ -218,11 +220,4 @@ Node::InsertionNotificationRequest HTMLButtonElement::insertedInto(ContainerNode
     return request;
 }
 
-void HTMLButtonElement::attributeChanged(const QualifiedName& name, const AtomicString& oldValue, const AtomicString& newValue, AttributeModificationReason reason)
-{
-    if (name == formactionAttr)
-        logEventIfIsolatedWorldAndInDocument("blinkSetAttribute", "button", formactionAttr.toString(), oldValue, newValue);
-    HTMLFormControlElement::attributeChanged(name, oldValue, newValue, reason);
-}
-
 } // namespace