Remove unnecessary image downloading handler of notifications.

chrome/browser/sync/sync_error_notifier_ash.cc

 // 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.
 
 #include "chrome/browser/sync/sync_error_notifier_ash.h"
 
 #include "ash/shell.h"
 #include "ash/shell_delegate.h"
 #include "ash/system/system_notifier.h"
 #include "base/strings/string16.h"
@@ skipping 34 matching lines @@
                            Profile* profile);
 
   // NotificationDelegate:
   virtual void Display() override;
   virtual void Error() override;
   virtual void Close(bool by_user) override;
   virtual bool HasClickedListener() override;
   virtual void Click() override;
   virtual void ButtonClick(int button_index) override;
   virtual std::string id() const override;
-  virtual content::WebContents* GetWebContents() const override;
 
  protected:
   virtual ~SyncNotificationDelegate();
 
  private:
   void ShowSyncSetup();
 
   // Unique id of the notification.
   const std::string id_;
 
@@ skipping 30 matching lines @@
 }
 
 void SyncNotificationDelegate::ButtonClick(int button_index) {
   ShowSyncSetup();
 }
 
 std::string SyncNotificationDelegate::id() const {
   return id_;
 }
 
-content::WebContents* SyncNotificationDelegate::GetWebContents() const {
-  return NULL;
-}
-
 void SyncNotificationDelegate::ShowSyncSetup() {
   LoginUIService* login_ui = LoginUIServiceFactory::GetForProfile(profile_);
   if (login_ui->current_login_ui()) {
     // TODO(michaelpg): The LoginUI might be on an inactive desktop.
     // See crbug.com/354280.
     login_ui->current_login_ui()->FocusUI();
     return;
   }
 
   chrome::ShowSettingsSubPageForProfile(profile_, chrome::kSyncSetupSubPage);
@@ skipping 79 matching lines @@
       ui::ResourceBundle::GetSharedInstance().GetImageNamed(
           IDR_NOTIFICATION_ALERT),
       blink::WebTextDirectionDefault,
       notifier_id,
       base::string16(),  // display_source
       base::ASCIIToUTF16(notification_id_),
       data,
       delegate);
   notification_ui_manager->Add(notification, profile_);
 }