Fix "unused variable" warnings.

chrome/browser/password_manager/save_password_infobar_delegate_android.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_PASSWORD_MANAGER_SAVE_PASSWORD_INFOBAR_DELEGATE_ANDROID_H_
 #define CHROME_BROWSER_PASSWORD_MANAGER_SAVE_PASSWORD_INFOBAR_DELEGATE_ANDROID_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/timer/elapsed_timer.h"
 #include "chrome/browser/password_manager/password_manager_infobar_delegate_android.h"
 #include "components/infobars/core/confirm_infobar_delegate.h"
 #include "components/password_manager/core/browser/password_form_manager.h"
 #include "components/password_manager/core/browser/password_manager_metrics_util.h"
 #include "ui/gfx/range/range.h"
 
 namespace content {
 class WebContents;
 }
 
-namespace password_manager {
-enum class CredentialSourceType;
-}
-
 // After a successful *new* login attempt, we take the PasswordFormManager in
 // provisional_save_manager_ and move it to a SavePasswordInfoBarDelegate while
 // the user makes up their mind with the "save password" infobar. Note if the
 // login is one we already know about, the end of the line is
 // provisional_save_manager_ because we just update it on success and so such
 // forms never end up in an infobar.
 class SavePasswordInfoBarDelegate : public PasswordManagerInfoBarDelegate {
  public:
   // If we won't be showing the one-click signin infobar, creates a save
   // password infobar and delegate and adds the infobar to the InfoBarService
@@ skipping 26 matching lines @@
   // and should update as per her decision.
   std::unique_ptr<password_manager::PasswordFormManager> form_to_save_;
 
   // Used to track the results we get from the info bar.
   password_manager::metrics_util::UIDismissalReason infobar_response_;
 
   // Measures the "Save password?" prompt lifetime. Used to report an UMA
   // signal.
   base::ElapsedTimer timer_;
 
-  // Records source from where infobar was triggered.
-  // Infobar appearance (message, buttons) depends on value of this parameter.
-  password_manager::CredentialSourceType source_type_;
-
   bool should_show_first_run_experience_;
 
   content::WebContents* web_contents_;
 
   DISALLOW_COPY_AND_ASSIGN(SavePasswordInfoBarDelegate);
 };
 
 // Creates the platform-specific SavePassword InfoBar. This function is defined
 // in platform-specific .cc (or .mm) files.
 std::unique_ptr<infobars::InfoBar> CreateSavePasswordInfoBar(
     std::unique_ptr<SavePasswordInfoBarDelegate> delegate);
 
 #endif  // CHROME_BROWSER_PASSWORD_MANAGER_SAVE_PASSWORD_INFOBAR_DELEGATE_ANDROID_H_