Notify launcher page with onTransitionChanged event

chrome/browser/ui/app_list/app_list_view_delegate.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_APP_LIST_APP_LIST_VIEW_DELEGATE_H_
 #define CHROME_BROWSER_UI_APP_LIST_APP_LIST_VIEW_DELEGATE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 13 matching lines @@
 #include "ui/app_list/app_list_view_delegate.h"
 
 class AppListControllerDelegate;
 class Profile;
 
 namespace apps {
 class CustomLauncherPageContents;
 }
 
 namespace app_list {
+class LauncherPageEventDispatcher;
 class SearchController;
 class SearchResourceManager;
 class SpeechUIModel;
 }
 
 namespace base {
 class FilePath;
 }
 
 namespace gfx {
@@ skipping 45 matching lines @@
   gfx::ImageSkia GetWindowIcon() override;
   void OpenSettings() override;
   void OpenHelp() override;
   void OpenFeedback() override;
   void ToggleSpeechRecognition() override;
   void ShowForProfileByPath(const base::FilePath& profile_path) override;
 #if defined(TOOLKIT_VIEWS)
   virtual views::View* CreateStartPageWebView(const gfx::Size& size) override;
   virtual std::vector<views::View*> CreateCustomPageWebViews(
       const gfx::Size& size) override;
+  void CustomLauncherPageAnimationChanged(double progress) override;

[tapted, 2014/11/06 11:54:18]

also, don't forget about applisttestviewdelegate and exampleapplistviewdelegate
orwhateveritis

[calamity, 2014/11/07 03:43:29]

Done.

 #endif
   bool IsSpeechRecognitionEnabled() override;
   const Users& GetUsers() const override;
   bool ShouldCenterWindow() const override;
   void AddObserver(app_list::AppListViewDelegateObserver* observer) override;
   void RemoveObserver(app_list::AppListViewDelegateObserver* observer) override;
 
  private:
   // Updates the speech webview and start page for the current |profile_|.
   void SetUpSearchUI();
@@ skipping 46 matching lines @@
   // Unowned pointer to the model owned by AppListSyncableService. Will change
   // if |profile_| changes.
   app_list::AppListModel* model_;
 
   // Note: order ensures |search_resource_manager_| is destroyed before
   // |speech_ui_|.
   scoped_ptr<app_list::SpeechUIModel> speech_ui_;
   scoped_ptr<app_list::SearchResourceManager> search_resource_manager_;
   scoped_ptr<app_list::SearchController> search_controller_;
 
+  scoped_ptr<app_list::LauncherPageEventDispatcher>
+      launcher_page_event_dispatcher_;
+
   base::TimeDelta auto_launch_timeout_;
 
   Users users_;
 
 #if defined(USE_ASH)
   scoped_ptr<AppSyncUIStateWatcher> app_sync_ui_state_watcher_;
 #endif
 
   ObserverList<app_list::AppListViewDelegateObserver> observers_;
 
   // Used to track the SigninManagers that this instance is observing so that
   // this instance can be removed as an observer on its destruction.
   ScopedObserver<SigninManagerBase, AppListViewDelegate> scoped_observer_;
 
   // Window contents of additional custom launcher pages.
   ScopedVector<apps::CustomLauncherPageContents> custom_page_contents_;
 
   // Registers for NOTIFICATION_APP_TERMINATING to unload custom launcher pages.
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(AppListViewDelegate);
 };
 
 #endif  // CHROME_BROWSER_UI_APP_LIST_APP_LIST_VIEW_DELEGATE_H_