Use mojo Shelf interfaces for both mash and classic ash.

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/common/shelf/shelf_view.h"
 
 #include <algorithm>
 #include <memory>
 #include <utility>
 #include <vector>
@@ skipping 232 matching lines @@
 // ids. This does not support pinning and unpinning operations and the return
 // value of IsAppPinned(...) is configurable.
 class TestShelfDelegateForShelfView : public ShelfDelegate {
  public:
   TestShelfDelegateForShelfView() {}
   ~TestShelfDelegateForShelfView() override {}
 
   void set_is_app_pinned(bool is_pinned) { is_app_pinned_ = is_pinned; }
 
   // ShelfDelegate overrides:
-  void OnShelfCreated(WmShelf* shelf) override {}
-
-  void OnShelfDestroyed(WmShelf* shelf) override {}
-
-  void OnShelfAlignmentChanged(WmShelf* shelf) override {}
-
-  void OnShelfAutoHideBehaviorChanged(WmShelf* shelf) override {}
-
-  void OnShelfAutoHideStateChanged(WmShelf* shelf) override {}
-
-  void OnShelfVisibilityStateChanged(WmShelf* shelf) override {}
-
   ShelfID GetShelfIDForAppID(const std::string& app_id) override {
     ShelfID id = 0;
     EXPECT_TRUE(base::StringToInt(app_id, &id));
     return id;
   }
 
   ShelfID GetShelfIDForAppIDAndLaunchID(const std::string& app_id,
                                         const std::string& launch_id) override {
     return GetShelfIDForAppID(app_id);
   }
@@ skipping 2896 matching lines @@
                 IsEmpty());
 
     ASSERT_TRUE(test_api_->IsShowingOverflowBubble());
   }
 }
 
 #endif  // !defined(OS_WIN)
 
 }  // namespace test
 }  // namespace ash