Revert of Refactor views app list services to allow more code sharing

chrome/browser/ui/app_list/app_list_shower_delegate.h

Index: chrome/browser/ui/app_list/app_list_shower_delegate.h
diff --git a/chrome/browser/ui/app_list/app_list_shower_delegate.h b/chrome/browser/ui/app_list/app_list_shower_delegate.h
deleted file mode 100644
index 9283cf49f6c842f8b1476d3b8e8d57e38b358864..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/app_list/app_list_shower_delegate.h
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright 2014 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_APP_LIST_APP_LIST_SHOWER_DELEGATE_H_
-#define CHROME_BROWSER_UI_APP_LIST_APP_LIST_SHOWER_DELEGATE_H_
-
-namespace app_list {
-class AppListView;
-}
-
-class AppListControllerDelegate;
-
-// Allows platform-specific hooks for the AppListShower.
-class AppListShowerDelegate {
- public:
-  virtual AppListControllerDelegate* GetControllerDelegateForCreate() = 0;
-  virtual void OnViewCreated() = 0;
-  virtual void OnViewDismissed() = 0;
-  virtual void MoveNearCursor(app_list::AppListView* view) = 0;
-};
-
-#endif  // CHROME_BROWSER_UI_APP_LIST_APP_LIST_SHOWER_DELEGATE_H_