Enable KeyboardOverlayDialog on aura.

chrome/browser/ui/views/window.cc

Index: chrome/browser/ui/views/window.cc
diff --git a/chrome/browser/ui/views/window.cc b/chrome/browser/ui/views/window.cc
index 683cf28e2bc017631537b6f3c30d84ecec620fa3..b7270746d8e5bbf9594983bf36524dfeabd7a11c 100644
--- a/chrome/browser/ui/views/window.cc
+++ b/chrome/browser/ui/views/window.cc
@@ -45,6 +45,16 @@ views::Widget* CreateViewsWindow(gfx::NativeWindow parent,
 #endif
 }
 
+views::Widget* CreateFramelessViewsWindow(gfx::NativeWindow parent,
+                                          views::WidgetDelegate* delegate) {
+#if defined(OS_CHROMEOS) && !defined(USE_AURA)
+  return chromeos::BubbleWindow::Create(parent, STYLE_FLUSH, delegate);
+#else
+  return views::Widget::CreateFramelessWindowWithParentAndBounds(delegate,
+      parent, gfx::Rect());
+#endif
+}
+
 views::Widget* CreateViewsBubble(views::BubbleDelegateView* delegate) {
   views::Widget* bubble_widget =
       views::BubbleDelegateView::CreateBubble(delegate);