Cleanup shelf initialization and observation.

ash/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_TEST_TEST_SHELF_DELEGATE_H_
 #define ASH_TEST_TEST_SHELF_DELEGATE_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 35 matching lines @@
 
   static TestShelfDelegate* instance() { return instance_; }
 
   // WindowObserver implementation
   void OnWindowDestroying(aura::Window* window) override;
   void OnWindowHierarchyChanging(const HierarchyChangeParams& params) override;
 
   // ShelfDelegate implementation.
   void OnShelfCreated(Shelf* shelf) override;
   void OnShelfDestroyed(Shelf* shelf) override;
+  void OnShelfAlignmentChanged(Shelf* shelf) override;
+  void OnShelfAutoHideBehaviorChanged(Shelf* shelf) override;
   ShelfID GetShelfIDForAppID(const std::string& app_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);
@@ skipping 10 matching lines @@
   // 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_TEST_TEST_SHELF_DELEGATE_H_