Convert //ios from scoped_ptr to std::unique_ptr.

ios/chrome/browser/passwords/credential_manager.h

 // Copyright 2015 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 IOS_CHROME_BROWSER_PASSWORDS_CREDENTIAL_MANAGER_H_
 #define IOS_CHROME_BROWSER_PASSWORDS_CREDENTIAL_MANAGER_H_
 
+#include <memory>
 #include <string>
 #include <vector>
 
 #import "base/mac/scoped_nsobject.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "components/password_manager/core/browser/credential_manager_password_form_manager.h"
 #include "components/password_manager/core/browser/credential_manager_pending_request_task.h"
 #include "components/password_manager/core/browser/credential_manager_pending_require_user_mediation_task.h"
 #include "components/password_manager/core/browser/password_manager_client.h"
 #include "components/password_manager/core/browser/password_store.h"
 #include "components/prefs/pref_member.h"
 #include "ios/web/public/web_state/web_state_observer.h"
 
 @class JSCredentialManager;
@@ skipping 69 matching lines @@
   // associated with |request_id_| with the given |error_type|. Invoked after a
   // page-initiated credential event, store, or retrieval fails.
   void RejectPromise(int request_id, ErrorType error_type);
 
   // Determines the currently loaded page's URL from the active WebState, but
   // only if it is absolutely trusted. Does not hit the network, but still might
   // be costly depending on the webview. Returns true if successful.
   bool GetUrlWithAbsoluteTrust(GURL* page_url);
 
   // The request to retrieve credentials from the PasswordStore.
-  scoped_ptr<password_manager::CredentialManagerPendingRequestTask>
+  std::unique_ptr<password_manager::CredentialManagerPendingRequestTask>
       pending_request_;
 
   // The task to notify the password manager that the user was signed out.
-  scoped_ptr<password_manager::CredentialManagerPendingRequireUserMediationTask>
+  std::unique_ptr<
+      password_manager::CredentialManagerPendingRequireUserMediationTask>
       pending_require_user_mediation_;
 
   // Saves credentials to the PasswordStore.
-  scoped_ptr<password_manager::CredentialManagerPasswordFormManager>
+  std::unique_ptr<password_manager::CredentialManagerPasswordFormManager>
       form_manager_;
 
   // Injected JavaScript to provide the API to web pages.
   base::scoped_nsobject<JSCredentialManager> js_manager_;
 
   // Client to access Chrome-specific password manager functionality. Weak.
   password_manager::PasswordManagerClient* client_;
 
   // Driver to access embedder-specific password manager functionality. Weak.
   password_manager::PasswordManagerDriver* driver_;
 
   // Whether zero-click sign-in is enabled.
   BooleanPrefMember zero_click_sign_in_enabled_;
 
   // Weak pointer factory for asynchronously resolving requests.
   base::WeakPtrFactory<CredentialManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CredentialManager);
 };
 
 #endif  // IOS_CHROME_BROWSER_PASSWORDS_CREDENTIAL_MANAGER_H_