Launch panels as popup windows in Aura, and add separate launcher icon logic for panels.

chrome/browser/ui/views/aura/launcher/launcher_updater.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_BROWSER_UI_VIEWS_AURA_LAUNCHER_LAUNCHER_UPDATER_H_
 #define CHROME_BROWSER_UI_VIEWS_AURA_LAUNCHER_LAUNCHER_UPDATER_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 16 matching lines @@
 namespace aura {
 class Window;
 }
 
 // LauncherUpdater is responsible for keeping the launcher representation of a
 // window up to date as the tab strip changes.
 class LauncherUpdater : public TabStripModelObserver {
  public:
   enum Type {
     TYPE_APP,
+    TYPE_PANEL,

[sky, 2012/03/02 23:08:53]

Why does the launcher need to know about panel?

[stevenjb, 2012/03/03 00:02:06]

See next comment.

     TYPE_TABBED
   };
 
   LauncherUpdater(aura::Window* window,
                   TabStripModel* tab_model,
                   ChromeLauncherDelegate* launcher_delegate,
                   Type type,
                   const std::string& app_id);
   virtual ~LauncherUpdater();
 
@@ skipping 90 matching lines @@
   // . Otherwise this is the id of the TYPE_TABBED item.
   ash::LauncherID item_id_;
 
   // Used for any app tabs.
   AppTabMap app_map_;
 
   DISALLOW_COPY_AND_ASSIGN(LauncherUpdater);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_AURA_LAUNCHER_LAUNCHER_UPDATER_H_