components: Cleanup class/struct fwd declarations

components/autofill/core/browser/autofill_credit_card_filling_infobar_delegate_mobile.h

 // Copyright 2016 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 COMPONENTS_AUTOFILL_CORE_BROWSER_AUTOFILL_CREDIT_CARD_FILLING_INFOBAR_DELEGATE_MOBILE_H_
 #define COMPONENTS_AUTOFILL_CORE_BROWSER_AUTOFILL_CREDIT_CARD_FILLING_INFOBAR_DELEGATE_MOBILE_H_
 
 #include <memory>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/strings/string16.h"
 #include "components/autofill/core/browser/autofill_metrics.h"
 #include "components/infobars/core/confirm_infobar_delegate.h"
 
-namespace infobars {
-class InfoBarManager;
-}
-
 namespace autofill {
 
 class CreditCard;
 
 // An InfoBarDelegate that enables the user to allow or deny filling credit
 // card information on a website form. Only used on mobile.
 class AutofillCreditCardFillingInfoBarDelegateMobile
     : public ConfirmInfoBarDelegate {
  public:
   AutofillCreditCardFillingInfoBarDelegateMobile(
@@ skipping 36 matching lines @@
 
   base::string16 card_label_;
   base::string16 card_sub_label_;
 
   DISALLOW_COPY_AND_ASSIGN(AutofillCreditCardFillingInfoBarDelegateMobile);
 };
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CORE_BROWSER_AUTOFILL_CREDIT_CARD_FILLING_INFOBAR_DELEGATE_MOBILE_H_