mash: Refactor ChromeLauncherController's ShelfDelegate code.

ash/common/test/test_shelf_delegate.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 ASH_COMMON_TEST_TEST_SHELF_DELEGATE_H_
 #define ASH_COMMON_TEST_TEST_SHELF_DELEGATE_H_
 
-#include <map>
 #include <memory>
 #include <set>
 #include <string>
 
 #include "ash/common/shelf/shelf_delegate.h"
 #include "base/macros.h"
 #include "ui/aura/window_observer.h"
 
 namespace ash {
 
 class WmWindow;
 
 namespace test {
 
 class ShelfInitializer;
 
 // Test implementation of ShelfDelegate.
 // Tests may create icons for windows by calling AddShelfItem().
 class TestShelfDelegate : public ShelfDelegate, public aura::WindowObserver {
  public:
   TestShelfDelegate();
   ~TestShelfDelegate() override;
 
   // Adds a ShelfItem for the given |window|. The ShelfItem's status will be
   // STATUS_CLOSED.
   void AddShelfItem(WmWindow* window);
 
-  // Adds a ShelfItem for the given |window| and adds a mapping from the added
-  // ShelfItem's ShelfID to the given |app_id|. The ShelfItem's status will be
-  // STATUS_CLOSED.
+  // Adds a ShelfItem for the given |window| and |app_id|. The ShelfItem's
+  // status will be STATUS_CLOSED.
   void AddShelfItem(WmWindow* window, const std::string& app_id);
 
-  // Adds a ShelfItem for the given |window| with the specified |status|.
-  void AddShelfItem(WmWindow* window, ShelfItemStatus status);
-
   // Removes the ShelfItem for the specified |window| and unpins it if it was
   // pinned. The |window|'s ShelfID to app id mapping will be removed if it
   // exists.
   void RemoveShelfItemForWindow(WmWindow* window);
 
   static TestShelfDelegate* instance() { return instance_; }
 
   // WindowObserver implementation
   void OnWindowDestroying(aura::Window* window) override;
   void OnWindowHierarchyChanging(const HierarchyChangeParams& params) override;
 
   // ShelfDelegate implementation.
   ShelfID GetShelfIDForAppID(const std::string& app_id) override;
   ShelfID GetShelfIDForAppIDAndLaunchID(const std::string& app_id,
                                         const std::string& launch_id) override;
-  bool HasShelfIDToAppIDMapping(ShelfID id) const override;
   const std::string& GetAppIDForShelfID(ShelfID id) override;
   void PinAppWithID(const std::string& app_id) override;
   bool IsAppPinned(const std::string& app_id) override;
   void UnpinAppWithID(const std::string& app_id) override;
 
  private:
-  // Adds a mapping from a ShelfID to an app id.
-  void AddShelfIDToAppIDMapping(ShelfID shelf_id, const std::string& app_id);
-
-  // Removes the mapping from a ShelfID to an app id.
-  void RemoveShelfIDToAppIDMapping(ShelfID shelf_id);
-
   static TestShelfDelegate* instance_;
 
   std::unique_ptr<ShelfInitializer> shelf_initializer_;
 
   std::set<std::string> pinned_apps_;
 
-  // Tracks the ShelfID to app id mappings.
-  std::map<ShelfID, std::string> shelf_id_to_app_id_map_;
-
   DISALLOW_COPY_AND_ASSIGN(TestShelfDelegate);
 };
 
 }  // namespace test
 }  // namespace ash
 
 #endif  // ASH_COMMON_TEST_TEST_SHELF_DELEGATE_H_