Give platform apps control over launcher right-click context menu.

chrome/browser/ui/ash/launcher/launcher_context_menu.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_ASH_LAUNCHER_LAUNCHER_CONTEXT_MENU_H_
 #define CHROME_BROWSER_UI_ASH_LAUNCHER_LAUNCHER_CONTEXT_MENU_H_
 
 #include "ash/launcher/launcher_alignment_menu.h"
 #include "ash/launcher/launcher_types.h"
 #include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
 #include "ui/base/models/simple_menu_model.h"
 
 class ChromeLauncherController;
 
+namespace extensions {
+class ContextMenuMatcher;
+}
+
 // Context menu shown for a launcher item.
 class LauncherContextMenu : public ui::SimpleMenuModel,
                             public ui::SimpleMenuModel::Delegate {
  public:
   // |item| is NULL if the context menu is for the launcher (the user right
   // |clicked on an area with no icons).
   LauncherContextMenu(ChromeLauncherController* controller,
                       const ash::LauncherItem* item);
   virtual ~LauncherContextMenu();
 
@@ skipping 26 matching lines @@
   // Does |item_| represent a valid item? See description of constructor for
   // details on why it may not be valid.
   bool is_valid_item() const { return item_.id != 0; }
 
   ChromeLauncherController* controller_;
 
   ash::LauncherItem item_;
 
   ash::LauncherAlignmentMenu alignment_menu_;
 
+  scoped_ptr<extensions::ContextMenuMatcher> extension_items_;
+
   DISALLOW_COPY_AND_ASSIGN(LauncherContextMenu);
 };
 
 #endif  // CHROME_BROWSER_UI_ASH_LAUNCHER_LAUNCHER_CONTEXT_MENU_H_