Bug 460402 - remove extra noise when there is no document accessible, r=aaronlev

accessible/src/base/nsAccessibilityService.cpp

@@ -1367,7 +1367,6 @@ NS_IMETHODIMP nsAccessibilityService::GetAccessible(nsIDOMNode *aNode,
     }
     else {
       CreateRootAccessible(aPresShell, nodeIsDoc, getter_AddRefs(newAcc)); // Does Init() for us
-      NS_WARN_IF_FALSE(newAcc, "No root/doc accessible created");
     }
 
     *aFrameHint = aPresShell->GetRootFrame();

accessible/src/base/nsRootAccessible.cpp

@@ -1068,10 +1068,9 @@ NS_IMETHODIMP nsRootAccessible::GetAccessibleRelated(PRUint32 aRelationType,
   if (contentTreeItem) {
     nsCOMPtr<nsIAccessibleDocument> accDoc =
       GetDocAccessibleFor(contentTreeItem, PR_TRUE);
-    NS_ASSERTION(accDoc, "No EMBEDS document");
-    if (accDoc) {
-      accDoc->QueryInterface(NS_GET_IID(nsIAccessible), (void**)aRelated);
-    }
+
+    if (accDoc)
+      CallQueryInterface(accDoc, aRelated);
   }
   return NS_OK;
 }