Revert of mash: Remove ChromeLauncherController's |id_to_item_controller_map_|.

chrome/browser/ui/ash/launcher/chrome_launcher_controller.h

 // Copyright 2013 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_CHROME_LAUNCHER_CONTROLLER_H_
 #define CHROME_BROWSER_UI_ASH_LAUNCHER_CHROME_LAUNCHER_CONTROLLER_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 71 matching lines @@
   // Returns the shelf item with the given id, or null if |id| isn't found.
   virtual const ash::ShelfItem* GetItem(ash::ShelfID id) const = 0;
 
   // Updates the type of an item.
   virtual void SetItemType(ash::ShelfID id, ash::ShelfItemType type) = 0;
 
   // Updates the running status of an item. It will also update the status of
   // browsers shelf item if needed.
   virtual void SetItemStatus(ash::ShelfID id, ash::ShelfItemStatus status) = 0;
 
+  // Updates the delegate associated with id (which should be a shortcut).
+  virtual void SetShelfItemDelegate(
+      ash::ShelfID id,
+      std::unique_ptr<ash::ShelfItemDelegate> item_delegate) = 0;
+
   // Closes or unpins the shelf item.
   virtual void CloseLauncherItem(ash::ShelfID id) = 0;
 
   // Returns true if the item identified by |id| is pinned.
   virtual bool IsPinned(ash::ShelfID id) = 0;
 
   // Set the shelf item status for the V1 application with the given |app_id|.
   // Adds or removes an item as needed to respect the running and pinned state.
   virtual void SetV1AppStatus(const std::string& app_id,
                               ash::ShelfItemStatus status) = 0;
@@ skipping 88 matching lines @@
 
   // Get the title for the applicatoin list entry for |web_contents|.
   // If |web_contents| has not loaded, returns "Net Tab".
   virtual base::string16 GetAppListTitle(
       content::WebContents* web_contents) const = 0;
 
   // Returns the ash::ShelfItemDelegate of BrowserShortcut.
   virtual BrowserShortcutLauncherItemController*
   GetBrowserShortcutLauncherItemController() = 0;
 
+  virtual ash::ShelfItemDelegate* GetShelfItemDelegate(
+      const ash::ShelfID id) = 0;
+
   // Check if the shelf visibility (location, visibility) will change with a new
   // user profile or not. However, since the full visibility calculation of the
   // shelf cannot be performed here, this is only a probability used for
   // animation predictions.
   virtual bool ShelfBoundsChangesProbablyWithUser(
       ash::WmShelf* shelf,
       const AccountId& account_id) const = 0;
 
   // Called when the user profile is fully loaded and ready to switch to.
   virtual void OnUserProfileReadyToSwitch(Profile* profile) = 0;
@@ skipping 82 matching lines @@
   // An observer that manages the shelf title and icon for settings windows.
   SettingsWindowObserver settings_window_observer_;
 
   // Used to load the images for app items.
   std::vector<std::unique_ptr<AppIconLoader>> app_icon_loaders_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeLauncherController);
 };
 
 #endif  // CHROME_BROWSER_UI_ASH_LAUNCHER_CHROME_LAUNCHER_CONTROLLER_H_