Optimization: not sending answer server requests for voice queries.

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 <stdint.h>
 
 #include <memory>
@@ skipping 113 matching lines @@
   // Note: order ensures |search_resource_manager_| is destroyed before
   // |speech_ui_|.
   std::unique_ptr<app_list::SpeechUIModel> speech_ui_;
   std::unique_ptr<app_list::SearchResourceManager> search_resource_manager_;
   std::unique_ptr<app_list::SearchController> search_controller_;
 
   std::unique_ptr<app_list::LauncherPageEventDispatcher>
       launcher_page_event_dispatcher_;
 
   base::TimeDelta auto_launch_timeout_;
-  // Determines whether the current search was initiated by speech.
-  bool is_voice_query_;
 
   std::unique_ptr<AppSyncUIStateWatcher> app_sync_ui_state_watcher_;
 
   ScopedObserver<TemplateURLService, AppListViewDelegate>
       template_url_service_observer_;
 
   // Window contents of additional custom launcher pages.
   std::vector<std::unique_ptr<app_list::CustomLauncherPageContents>>
       custom_page_contents_;
 
   // Registers for NOTIFICATION_APP_TERMINATING to unload custom launcher pages.
   content::NotificationRegistrar registrar_;
 
   std::unique_ptr<app_list::SearchAnswerWebContentsDelegate>
       search_answer_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(AppListViewDelegate);
 };
 
 #endif  // CHROME_BROWSER_UI_APP_LIST_APP_LIST_VIEW_DELEGATE_H_