Remove nsIStyledContent. Bug 313968, r=sicking, r=dbaron on nsCSSStyleSheet

changes, sr=jst

layout/inspector/src/inDOMView.cpp

@@ -56,7 +56,6 @@
 #include "nsIDocument.h"
 #include "nsIServiceManager.h"
 #include "nsITreeColumns.h"
-#include "nsIStyledContent.h"
 
 ////////////////////////////////////////////////////////////////////////
 // inDOMViewNode
@@ -647,9 +646,9 @@ NS_IMPL_NSIDOCUMENTOBSERVER_STATE_STUB(inDOMView)
 NS_IMPL_NSIDOCUMENTOBSERVER_STYLE_STUB(inDOMView)
 
 void
-inDOMView::AttributeChanged(nsIDocument *aDocument,
+inDOMView::AttributeChanged(nsIDocument *aDocument, nsIContent* aContent,
-                            nsIStyledContent* aContent, PRInt32 aNameSpaceID,
+                            PRInt32 aNameSpaceID, nsIAtom* aAttribute,
-                            nsIAtom* aAttribute, PRInt32 aModType)
+                            PRInt32 aModType)
 {
   if (!mTree) {
     return;