Support Windows native textfield, combobox, etc. in new bubbles.

chrome/browser/chromeos/setting_level_bubble.cc

Index: chrome/browser/chromeos/setting_level_bubble.cc
diff --git a/chrome/browser/chromeos/setting_level_bubble.cc b/chrome/browser/chromeos/setting_level_bubble.cc
index 0db0b7c5454e7f9f7f7b25b9b32f52016b4164dd..6efb93b7310deb4c3015b5c9bfa778862545b52b 100644
--- a/chrome/browser/chromeos/setting_level_bubble.cc
+++ b/chrome/browser/chromeos/setting_level_bubble.cc
@@ -223,9 +223,8 @@ SettingLevelBubbleView* SettingLevelBubble::CreateView() {
   views::Widget* parent = GetToplevelWidget();
   SettingLevelBubbleDelegateView* delegate =
       new SettingLevelBubbleDelegateView(parent);
-  views::Widget* widget =
-      views::BubbleDelegateView::CreateBubble(delegate, parent);
-  widget->AddObserver(this);
+  views::BubbleDelegateView::CreateBubble(delegate, parent);
+  delegate->GetWidget()->AddObserver(this);
   // Hold on to the content view.
   return delegate->view();
 }