components: Cleanup class/struct fwd declarations

components/autofill/content/browser/content_autofill_driver_factory.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 COMPONENTS_AUTOFILL_CONTENT_BROWSER_CONTENT_AUTOFILL_DRIVER_FACTORY_H_
 #define COMPONENTS_AUTOFILL_CONTENT_BROWSER_CONTENT_AUTOFILL_DRIVER_FACTORY_H_
 
 #include <map>
 #include <memory>
 #include <string>
 
 #include "base/supports_user_data.h"
 #include "components/autofill/content/common/autofill_driver.mojom.h"
 #include "components/autofill/core/browser/autofill_manager.h"
 #include "content/public/browser/web_contents_observer.h"
 
 namespace content {
 class RenderFrameHost;
 }
 
 namespace autofill {
 
-class AutofillDriver;
 class ContentAutofillDriver;
 
 // Manages lifetime of ContentAutofillDriver. One Factory per WebContents
 // creates one Driver per RenderFrame.
 class ContentAutofillDriverFactory : public content::WebContentsObserver,
                                      public base::SupportsUserData::Data {
  public:
   ~ContentAutofillDriverFactory() override;
 
   static void CreateForWebContentsAndDelegate(
@@ skipping 36 matching lines @@
   std::string app_locale_;
   AutofillManager::AutofillDownloadManagerState enable_download_manager_;
 
   std::map<content::RenderFrameHost*, std::unique_ptr<ContentAutofillDriver>>
       frame_driver_map_;
 };
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CONTENT_BROWSER_CONTENT_AUTOFILL_DRIVER_FACTORY_H_