Revert of Delete base/prefs and update callers to use components.

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 <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 "base/prefs/pref_member.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;
 
 // Implements the app-side of the CredentialManagement JavaScript API.
 // Injects and listens to the injected JavaScript, owns and drives the user
 // interface, and integrates with the password manager. This is the iOS
 // equivalent of the upstream class CredentialManagerDispatcher. Note: Only
 // activates on iOS 8 and later.
 class CredentialManager
@@ skipping 91 matching lines @@
   // 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_