Remove a couple desktop infobar png assets.

chrome/browser/ui/website_settings/website_settings_infobar_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_WEBSITE_SETTINGS_WEBSITE_SETTINGS_INFOBAR_DELEGATE_H_
 #define CHROME_BROWSER_UI_WEBSITE_SETTINGS_WEBSITE_SETTINGS_INFOBAR_DELEGATE_H_
 
 #include "base/macros.h"
 #include "components/infobars/core/confirm_infobar_delegate.h"
 
@@ skipping 10 matching lines @@
   // |infobar_service|.
   static void Create(InfoBarService* infobar_service);
 
  private:
   WebsiteSettingsInfoBarDelegate();
   ~WebsiteSettingsInfoBarDelegate() override;
 
   // ConfirmInfoBarDelegate:
   Type GetInfoBarType() const override;
   infobars::InfoBarDelegate::InfoBarIdentifier GetIdentifier() const override;
-  int GetIconId() const override;
   gfx::VectorIconId GetVectorIconId() const override;
   base::string16 GetMessageText() const override;
   int GetButtons() const override;
   base::string16 GetButtonLabel(InfoBarButton button) const override;
   bool Accept() override;
 
   DISALLOW_COPY_AND_ASSIGN(WebsiteSettingsInfoBarDelegate);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBSITE_SETTINGS_WEBSITE_SETTINGS_INFOBAR_DELEGATE_H_