Backing out experimental TakeFocus() changes which weren't supposed to be part of previous checkin

accessible/src/base/nsDocAccessible.cpp

@@ -251,34 +251,18 @@ NS_IMETHODIMP nsDocAccessible::GetFocusedChild(nsIAccessible **aFocusedChild)
 
 NS_IMETHODIMP nsDocAccessible::TakeFocus()
 {
-  NS_ENSURE_TRUE(mDocument, NS_ERROR_FAILURE);
+  nsCOMPtr<nsIDOMWindow> domWin;
-  PRUint32 state;
+  GetWindow(getter_AddRefs(domWin));
-  GetState(&state, nsnull);
+  nsCOMPtr<nsPIDOMWindow> privateDOMWindow(do_QueryInterface(domWin));
-  if (0 == (state & nsIAccessibleStates::STATE_FOCUSABLE)) {
+  NS_ENSURE_TRUE(privateDOMWindow, NS_ERROR_FAILURE);
-    return NS_ERROR_FAILURE; // Not focusable
+  nsIFocusController *focusController =
+    privateDOMWindow->GetRootFocusController();
+  if (focusController) {
+    nsCOMPtr<nsIDOMElement> ele(do_QueryInterface(mDOMNode));
+    focusController->SetFocusedElement(ele);
+    return NS_OK;
   }
-
+  return NS_ERROR_FAILURE;
-  nsCOMPtr<nsIDocShellTreeItem> treeItem = GetDocShellTreeItemFor(mDOMNode);
-  nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(treeItem);
-  NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
-
-  nsCOMPtr<nsIPresShell> shell(GetPresShell());
-  nsIEventStateManager *esm = shell->GetPresContext()->EventStateManager();
-  NS_ENSURE_TRUE(esm, NS_ERROR_FAILURE);
-
-  nsresult rv = esm->SetContentState(nsnull, NS_EVENT_STATE_FOCUS);
-  NS_ENSURE_SUCCESS(rv, rv);
-  rv = docShell->SetHasFocus(PR_TRUE);
-  NS_ENSURE_SUCCESS(rv, rv);
-  rv = docShell->SetCanvasHasFocus(PR_TRUE);
-  NS_ENSURE_SUCCESS(rv, rv);
-  nsIContent *content = mDocument->GetRootContent();
-  NS_ENSURE_TRUE(content, NS_ERROR_FAILURE);
-  content->SetFocus(shell->GetPresContext());
-  esm->SetFocusedContent(content);
-  esm->MoveCaretToFocus();
-  esm->SetFocusedContent(nsnull);
-  return NS_OK;
 }
 
 // ------- nsIAccessibleDocument Methods (5) ---------------