Bug 573706 - make frame based accessible creation more pellucid, r=davidb, sr=roc

layout/forms/nsFileControlFrame.cpp

@@ -842,14 +842,16 @@ nsFileControlFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
 }
 
 #ifdef ACCESSIBILITY
-NS_IMETHODIMP nsFileControlFrame::GetAccessible(nsIAccessible** aAccessible)
+already_AddRefed<nsAccessible>
+nsFileControlFrame::CreateAccessible()
 {
   // Accessible object exists just to hold onto its children, for later shutdown
   nsCOMPtr<nsIAccessibilityService> accService = do_GetService("@mozilla.org/accessibilityService;1");
   if (!accService)
-    return NS_ERROR_FAILURE;
+    return nsnull;
 
-  return accService->CreateHTMLGenericAccessible(static_cast<nsIFrame*>(this), aAccessible);
+  return accService->CreateHyperTextAccessible(mContent,
+                                               PresContext()->PresShell());
 }
 #endif