chrome: Cleanup class/struct forward declarations

chrome/browser/safe_browsing/client_side_detection_service.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.
 //
 // Helper class which handles communication with the SafeBrowsing backends for
 // client-side phishing detection.  This class is used to fetch the client-side
 // model and send it to all renderers.  This class is also used to send a ping
 // back to Google to verify if a particular site is really phishing or not.
 //
 // This class is not thread-safe and expects all calls to be made on the UI
@@ skipping 16 matching lines @@
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "chrome/browser/safe_browsing/client_side_model_loader.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "net/url_request/url_fetcher_delegate.h"
 #include "url/gurl.h"
 
-namespace base {
-class TimeDelta;
-}
-
 namespace content {
 class RenderProcessHost;
 }
 
 namespace net {
 class URLFetcher;
 class URLRequestContextGetter;
 class URLRequestStatus;
 }  // namespace net
 
 namespace safe_browsing {
 class ClientMalwareRequest;
 class ClientPhishingRequest;
-class ClientPhishingResponse;
-class ClientSideModel;
 
 // Main service which pushes models to the renderers, responds to classification
 // requests. This owns two ModelLoader objects.
 class ClientSideDetectionService : public net::URLFetcherDelegate,
                                    public content::NotificationObserver {
  public:
   // void(GURL phishing_url, bool is_phishing).
   typedef base::Callback<void(GURL, bool)> ClientReportPhishingRequestCallback;
   // void(GURL original_url, GURL malware_url, bool is_malware).
   typedef base::Callback<void(GURL, GURL, bool)>
@@ skipping 196 matching lines @@
   // Used to asynchronously call the callbacks for
   // SendClientReportPhishingRequest.
   base::WeakPtrFactory<ClientSideDetectionService> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ClientSideDetectionService);
 };
 
 }  // namespace safe_browsing
 
 #endif  // CHROME_BROWSER_SAFE_BROWSING_CLIENT_SIDE_DETECTION_SERVICE_H_