chrome: Cleanup class/struct forward declarations

chrome/browser/loader/safe_browsing_resource_throttle.h

 // Copyright (c) 2012 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 CHROME_BROWSER_LOADER_SAFE_BROWSING_RESOURCE_THROTTLE_H_
 #define CHROME_BROWSER_LOADER_SAFE_BROWSING_RESOURCE_THROTTLE_H_
 
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "chrome/browser/safe_browsing/safe_browsing_service.h"
 #include "chrome/browser/safe_browsing/ui_manager.h"
 #include "components/safe_browsing_db/database_manager.h"
 #include "content/public/browser/resource_throttle.h"
 #include "content/public/common/resource_type.h"
 #include "net/log/net_log_event_type.h"
 #include "net/log/net_log_with_source.h"
 #include "url/gurl.h"
 
-class ResourceDispatcherHost;
-
 namespace net {
 class URLRequest;
 }
 
-namespace safe_browsing {
-class V4LocalDatabaseManager;
-}
-
 // SafeBrowsingResourceThrottle checks that URLs are "safe" before
 // navigating to them. To be considered "safe", a URL must not appear in the
 // malware/phishing blacklists (see SafeBrowsingService for details).
 //
 // On desktop (ifdef SAFE_BROWSING_DB_LOCAL)
 // -----------------------------------------
 // This check is done before requesting the original URL, and additionally
 // before following any subsequent redirect.  In the common case the check
 // completes synchronously (no match in the in-memory DB), so the request's
 // flow is un-interrupted.  However if the URL fails this quick check, it
@@ skipping 137 matching lines @@
   scoped_refptr<safe_browsing::SafeBrowsingDatabaseManager> database_manager_;
   scoped_refptr<safe_browsing::SafeBrowsingUIManager> ui_manager_;
   const net::URLRequest* request_;
   const content::ResourceType resource_type_;
   net::NetLogWithSource net_log_with_source_;
 
   DISALLOW_COPY_AND_ASSIGN(SafeBrowsingResourceThrottle);
 };
 
 #endif  // CHROME_BROWSER_LOADER_SAFE_BROWSING_RESOURCE_THROTTLE_H_