Refactor views app list services to allow more code sharing

chrome/browser/ui/app_list/app_list_shower_delegate.h

+// 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 OnViewHidden() = 0;
+  virtual void MoveNearCursor(app_list::AppListView* view) = 0;
+};
+
+#endif  // CHROME_BROWSER_UI_APP_LIST_APP_LIST_SHOWER_DELEGATE_H_