Add deprecation warning banner to App Launcher on Windows and Linux.

ui/app_list/views/apps_container_view.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 UI_APP_LIST_VIEWS_APPS_CONTAINER_VIEW_H_
 #define UI_APP_LIST_VIEWS_APPS_CONTAINER_VIEW_H_
 
 #include <stddef.h>
 
 #include <vector>
 
 #include "base/macros.h"
 #include "ui/app_list/app_list_folder_item.h"
 #include "ui/app_list/views/app_list_page.h"
 #include "ui/app_list/views/top_icon_animation_view.h"
+#include "ui/gfx/range/range.h"
+#include "ui/views/controls/styled_label_listener.h"
 
 namespace gfx {
 class Rect;
 }
 
 namespace app_list {
 
 class AppsGridView;
 class ApplicationDragAndDropHost;
 class AppListFolderItem;
 class AppListFolderView;
 class AppListMainView;
 class AppListModel;
+class AppListViewDelegate;
 class ContentsView;
 class FolderBackgroundView;
 
 // AppsContainerView contains a root level AppsGridView to render the root level
 // app items, and a AppListFolderView to render the app items inside the
 // active folder. Only one if them is visible to user at any time.
-class AppsContainerView : public AppListPage, public TopIconAnimationObserver {
+class AppsContainerView : public AppListPage,
+                          public TopIconAnimationObserver,
+                          public views::StyledLabelListener {
  public:
   AppsContainerView(AppListMainView* app_list_main_view,
                     AppListModel* model);
   ~AppsContainerView() override;
 
   // Shows the active folder content specified by |folder_item|.
   void ShowActiveFolder(AppListFolderItem* folder_item);
 
   // Shows the root level apps list. This is called when UI navigate back from
   // a folder view with |folder_item|. If |folder_item| is NULL skips animation.
@@ skipping 25 matching lines @@
   void Layout() override;
   bool OnKeyPressed(const ui::KeyEvent& event) override;
 
   // AppListPage overrides:
   void OnWillBeShown() override;
   gfx::Rect GetPageBoundsForState(AppListModel::State state) const override;
 
   // TopIconAnimationObserver overrides:
   void OnTopIconAnimationsComplete() override;
 
+  // StyledLabelListener overrides:
+  void StyledLabelLinkClicked(views::StyledLabel* label,
+                              const gfx::Range& range,
+                              int event_flags) override;
+
   AppsGridView* apps_grid_view() { return apps_grid_view_; }
   FolderBackgroundView* folder_background_view() {
      return folder_background_view_;
   }
   AppListFolderView* app_list_folder_view() { return app_list_folder_view_; }
 
  private:
   enum ShowState {
     SHOW_NONE,  // initial state
     SHOW_APPS,
     SHOW_ACTIVE_FOLDER,
     SHOW_ITEM_REPARENT,
   };
 
   void SetShowState(ShowState show_state, bool show_apps_with_animation);
 
   // Calculates the top item icon bounds in the active folder icon. The bounds
   // is relative to AppsContainerView.
   // Returns the bounds of top items' icon in sequence of top left, top right,
   // bottom left, bottom right.
   std::vector<gfx::Rect> GetTopItemIconBoundsInActiveFolder();
 
   // Creates the transitional views for animating the top items in the folder
   // when opening or closing a folder.
   void CreateViewsForFolderTopItemsAnimation(
       AppListFolderItem* active_folder, bool open_folder);
 
   void PrepareToShowApps(AppListFolderItem* folder_item);
 
+  // Null on Chrome OS (unused).
+  View* deprecation_banner_view_ = nullptr;  // Owned by views hierarchy.
   AppsGridView* apps_grid_view_;  // Owned by views hierarchy.
   AppListFolderView* app_list_folder_view_;  // Owned by views hierarchy.
   FolderBackgroundView* folder_background_view_;  // Owned by views hierarchy.
   ShowState show_state_;
+  AppListViewDelegate* view_delegate_;
 
   // The transitional views for animating the top items in folder
   // when opening or closing a folder.
   std::vector<views::View*> top_icon_views_;
 
   size_t top_icon_animation_pending_count_;
 
   DISALLOW_COPY_AND_ASSIGN(AppsContainerView);
 };
 
 }  // namespace app_list
 
 
 #endif  // UI_APP_LIST_VIEWS_APPS_CONTAINER_VIEW_H_