cros: add new search box hint text for launcher

chrome/browser/ui/app_list/search/search_resource_manager.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_SEARCH_SEARCH_RESOURCE_MANAGER_H_
 #define CHROME_BROWSER_UI_APP_LIST_SEARCH_SEARCH_RESOURCE_MANAGER_H_
 
 #include "base/macros.h"
 #include "ui/app_list/speech_ui_model_observer.h"
 
@@ skipping 13 matching lines @@
   ~SearchResourceManager() override;
 
  private:
   // SpeechUIModelObserver overrides:
   void OnSpeechRecognitionStateChanged(
       SpeechRecognitionState new_state) override;
 
   SearchBoxModel* search_box_;
   SpeechUIModel* speech_ui_;
 
+  bool fullscreen_app_list_enabled_ = false;

[xiyuan, 2017/06/12 19:24:55]

nit: bool -> const bool

[Qiang(Joe) Xu, 2017/06/12 21:45:31]

felt can just remove this.

+
   DISALLOW_COPY_AND_ASSIGN(SearchResourceManager);
 };
 
 }  // namespace app_list
 
 #endif  // CHROME_BROWSER_UI_APP_LIST_SEARCH_SEARCH_RESOURCE_MANAGER_H_