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

chrome/browser/ui/views/ash/launcher/chrome_launcher_delegate.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_ASH_LAUNCHER_CHROME_LAUNCHER_DELEGATE_H_
 #define CHROME_BROWSER_UI_VIEWS_ASH_LAUNCHER_CHROME_LAUNCHER_DELEGATE_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 21 matching lines @@
 // and apps. It does this by way of LauncherUpdaters.
 // TODO: rename this. ChromeLauncherDelegate is a poor name for what it actually
 // does.
 class ChromeLauncherDelegate : public ash::LauncherDelegate,
                                public ash::LauncherModelObserver,
                                public content::NotificationObserver {
  public:
   // Indicates what should happen when the app is launched.
   enum AppType {
     APP_TYPE_WINDOW,
+    APP_TYPE_PANEL,
     APP_TYPE_TAB
   };
 
   // Interface used to load app icons. This is in it's own class so that it can
   // be mocked.
   class AppIconLoader {
    public:
     virtual ~AppIconLoader() {}
 
     // Returns the app id of the specified tab, or an empty string if there is
@@ skipping 166 matching lines @@
 
   // Used to load the image for an app tab.
   scoped_ptr<AppIconLoader> app_icon_loader_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeLauncherDelegate);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_ASH_LAUNCHER_CHROME_LAUNCHER_DELEGATE_H_