Adding a new window type for frameless non-transient top level windows, used by ChromeOS' window ...

chrome/browser/chromeos/notifications/notification_panel.cc

Index: chrome/browser/chromeos/notifications/notification_panel.cc
===================================================================
--- chrome/browser/chromeos/notifications/notification_panel.cc	(revision 88473)
+++ chrome/browser/chromeos/notifications/notification_panel.cc	(working copy)
@@ -426,7 +426,7 @@
     panel_widget_ = new views::Widget;
     // TODO(oshima): Using window because Popup widget behaves weird
     // when resizing. This needs to be investigated.
-    Widget::InitParams params(Widget::InitParams::TYPE_POPUP);
+    Widget::InitParams params(Widget::InitParams::TYPE_WINDOW_FRAMELESS);
     // Enable double buffering because the panel has both pure views
     // control and native controls (scroll bar).
     params.double_buffer = true;