mash: Preliminary support for shelf auto-hide

ash/shelf/shelf_view_unittest.cc

 // 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.
 
 #include "ash/shelf/shelf_view.h"
 
 #include <algorithm>
 #include <memory>
 #include <utility>
 #include <vector>
@@ skipping 237 matching lines @@
 
   // ShelfDelegate overrides:
   void OnShelfCreated(Shelf* shelf) override {}
 
   void OnShelfDestroyed(Shelf* shelf) override {}
 
   void OnShelfAlignmentChanged(Shelf* shelf) override {}
 
   void OnShelfAutoHideBehaviorChanged(Shelf* shelf) override {}
 
+  void OnShelfAutoHideStateChanged(Shelf* shelf) override {}
+
+  void OnShelfVisibilityStateChanged(Shelf* shelf) override {}
+
   ShelfID GetShelfIDForAppID(const std::string& app_id) override {
     ShelfID id = 0;
     EXPECT_TRUE(base::StringToInt(app_id, &id));
     return id;
   }
 
   bool HasShelfIDToAppIDMapping(ShelfID id) const override { return true; }
 
   const std::string& GetAppIDForShelfID(ShelfID id) override {
     // Use |app_id_| member variable because returning a reference to local
@@ skipping 1717 matching lines @@
   test_api_->RunMessageLoopUntilAnimationsDone();
   CheckAllItemsAreInBounds();
 }
 
 INSTANTIATE_TEST_CASE_P(LtrRtl, ShelfViewTextDirectionTest, testing::Bool());
 INSTANTIATE_TEST_CASE_P(VisibleBounds, ShelfViewVisibleBoundsTest,
     testing::Bool());
 
 }  // namespace test
 }  // namespace ash