Enable compilation of //components/autofill on iOS with gn.

components/autofill/core/browser/autofill_field_trial_ios.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 COMPONENTS_AUTOFILL_IOS_BROWSER_AUTOFILL_FIELD_TRIAL_IOS_H_
-#define COMPONENTS_AUTOFILL_IOS_BROWSER_AUTOFILL_FIELD_TRIAL_IOS_H_
+#ifndef COMPONENTS_AUTOFILL_CORE_BROWSER_AUTOFILL_FIELD_TRIAL_IOS_H_
+#define COMPONENTS_AUTOFILL_CORE_BROWSER_AUTOFILL_FIELD_TRIAL_IOS_H_
 
 #include "base/macros.h"
 
 namespace autofill {
 
 // This class manages the iOS Autofill field trials.
 class AutofillFieldTrialIOS {
  public:
   // Returns whether the user is in a full-form Autofill field trial. Full-form
   // Autofill fills all fields of the form at once, similar to the desktop and
   // Clank Autofill implementations. Previous iOS implementation requires user
   // to select an Autofill value for each field individually, automatically
   // advancing focus to the next field after each selection.
   static bool IsFullFormAutofillEnabled();
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(AutofillFieldTrialIOS);
 };
 
 }  // namespace autofill
 
-#endif  // COMPONENTS_AUTOFILL_IOS_BROWSER_AUTOFILL_FIELD_TRIAL_IOS_H_
+#endif  // COMPONENTS_AUTOFILL_CORE_BROWSER_AUTOFILL_FIELD_TRIAL_IOS_H_