components: Cleanup class/struct fwd declarations

components/favicon/content/content_favicon_driver.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_FAVICON_CONTENT_CONTENT_FAVICON_DRIVER_H_
 #define COMPONENTS_FAVICON_CONTENT_CONTENT_FAVICON_DRIVER_H_
 
 #include "base/macros.h"
 #include "components/favicon/core/favicon_driver_impl.h"
 #include "content/public/browser/reload_type.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
 #include "url/gurl.h"
 
 namespace content {
-struct FaviconStatus;
 struct FaviconURL;
 class WebContents;
 }
 
 namespace favicon {
 
 // ContentFaviconDriver is an implementation of FaviconDriver that listens to
 // WebContents events to start download of favicons and to get informed when the
 // favicon download has completed.
 class ContentFaviconDriver
@@ skipping 53 matching lines @@
 
   GURL bypass_cache_page_url_;
   std::vector<content::FaviconURL> favicon_urls_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentFaviconDriver);
 };
 
 }  // namespace favicon
 
 #endif  // COMPONENTS_FAVICON_CONTENT_CONTENT_FAVICON_DRIVER_H_