Switch SupportsUserData uses to use unique_ptr.

components/autofill/ios/browser/autofill_driver_ios.h

 // Copyright 2013 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_CONTENT_BROWSER_AUTOFILL_DRIVER_IOS_H_
 #define COMPONENTS_AUTOFILL_CONTENT_BROWSER_AUTOFILL_DRIVER_IOS_H_
 
 #include <string>
 
 #include "components/autofill/core/browser/autofill_client.h"
 #include "components/autofill/core/browser/autofill_driver.h"
 #include "components/autofill/core/browser/autofill_external_delegate.h"
 #include "components/autofill/core/browser/autofill_manager.h"
 #include "ios/web/public/web_state/web_state_user_data.h"
 
 namespace web {
 class WebState;
 }
 
 @protocol AutofillDriverIOSBridge;
 
 namespace autofill {
 
 // Class that drives autofill flow on iOS. There is one instance per
 // WebContents.
 class AutofillDriverIOS : public AutofillDriver,
                           public web::WebStateUserData<AutofillDriverIOS> {
  public:
+  ~AutofillDriverIOS() override;
+
   static void CreateForWebStateAndDelegate(
       web::WebState* web_state,
       AutofillClient* client,
       id<AutofillDriverIOSBridge> bridge,
       const std::string& app_locale,
       AutofillManager::AutofillDownloadManagerState enable_download_manager);
 
   // AutofillDriver:
   bool IsIncognito() const override;
   net::URLRequestContextGetter* GetURLRequestContext() override;
@@ skipping 21 matching lines @@
   gfx::RectF TransformBoundingBoxToViewportCoordinates(
       const gfx::RectF& bounding_box) override;
 
  private:
   AutofillDriverIOS(
       web::WebState* web_state,
       AutofillClient* client,
       id<AutofillDriverIOSBridge> bridge,
       const std::string& app_locale,
       AutofillManager::AutofillDownloadManagerState enable_download_manager);
-  ~AutofillDriverIOS() override;
 
   // The WebState with which this object is associated.
   web::WebState* web_state_;
 
   // AutofillDriverIOSBridge instance that is passed in.
   id<AutofillDriverIOSBridge> bridge_;
 
   // AutofillManager instance via which this object drives the shared Autofill
   // code.
   AutofillManager autofill_manager_;
   // AutofillExternalDelegate instance that is passed to the AutofillManager.
   AutofillExternalDelegate autofill_external_delegate_;
 };
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CONTENT_BROWSER_AUTOFILL_DRIVER_IOS_H_