Move IN_OVERFLOW from Panel::ExpansionState to new enum.

chrome/common/chrome_notification_types.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_COMMON_CHROME_NOTIFICATION_TYPES_H_
 #define CHROME_COMMON_CHROME_NOTIFICATION_TYPES_H_
 #pragma once
 
 #include "content/public/browser/notification_types.h"
 
@@ skipping 948 matching lines @@
   // of the screen.
   // Sent when all nonblocking bounds animations are finished across panels.
   // Used only in unit testing.
   NOTIFICATION_PANEL_BOUNDS_ANIMATIONS_FINISHED,
 
   // Sent when panel gains/loses focus.
   // The source is the Panel, no details.
   // Used only in unit testing.
   NOTIFICATION_PANEL_CHANGED_ACTIVE_STATUS,
 
+  // Sent when panel is switched between different layout states.
+  // The source is the Panel, no details.
+  // Used only in unit testing.
+  NOTIFICATION_PANEL_CHANGED_LAYOUT_STATE,

[prasadt, 2012/01/20 04:43:08]

Not in alphabetical order.

[jianli, 2012/01/20 23:33:08]

I do not think there is a requirement for this. I rather put notification for
layout state change before expansion state change since the former one takes
higher priority.

+
   // Sent when panel is minimized/restored/shows title only etc.
   // The source is the Panel, no details.
   // Used only in unit testing.
   NOTIFICATION_PANEL_CHANGED_EXPANSION_STATE,
 
   // Sent when panel window size is known. This is for platforms where the
   // window creation is async and size of the window only becomes known later.
   // Used only in unit testing.
   NOTIFICATION_PANEL_WINDOW_SIZE_KNOWN,
 
@@ skipping 31 matching lines @@
   // Currently only Content and Chrome define and use notifications.
   // Custom notifications not belonging to Content and Chrome should start
   // from here.
   NOTIFICATION_CHROME_END,
 };
 
 }  // namespace chrome
 
 
 #endif  // CHROME_COMMON_CHROME_NOTIFICATION_TYPES_H_