content: Cleanup class/struct forward declarations

content/browser/loader/resource_dispatcher_host_impl.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.
 
 // This is the browser side of the resource dispatcher, it receives requests
 // from the child process (i.e. [Renderer, Plugin, Worker]ProcessHost), and
 // dispatches them to URLRequests. It then forwards the messages from the
 // URLRequests back to the correct process for handling.
 //
 // See http://dev.chromium.org/developers/design-documents/multi-process-resource-loading
@@ skipping 30 matching lines @@
 #include "ipc/ipc_message.h"
 #include "mojo/public/cpp/system/data_pipe.h"
 #include "net/base/request_priority.h"
 #include "net/cookies/canonical_cookie.h"
 #include "net/url_request/url_request.h"
 
 namespace base {
 class FilePath;
 }
 
-namespace net {
-class URLRequestJobFactory;
-}
-
 namespace storage {
 class ShareableFileReference;
 }
 
 namespace content {
 class AppCacheService;
 class AsyncRevalidationManager;
 class LoaderDelegate;
 class NavigationURLLoaderImplCore;
 class NavigationUIData;
 class RenderFrameHostImpl;
 class ResourceContext;
 class ResourceDispatcherHostDelegate;
 class ResourceHandler;
 class ResourceMessageDelegate;
 class ResourceMessageFilter;
 class ResourceRequestInfoImpl;
 class ServiceWorkerNavigationHandleCore;
-struct CommonNavigationParams;
 struct NavigationRequestInfo;
 struct Referrer;
 struct ResourceRequest;
 
 namespace mojom {
 class URLLoader;
 }  // namespace mojom
 
 using CreateDownloadHandlerIntercept =
     base::Callback<std::unique_ptr<ResourceHandler>(net::URLRequest*)>;
@@ skipping 689 matching lines @@
 
   // Points to the registered download handler intercept.
   CreateDownloadHandlerIntercept create_download_handler_intercept_;
 
   DISALLOW_COPY_AND_ASSIGN(ResourceDispatcherHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_LOADER_RESOURCE_DISPATCHER_HOST_IMPL_H_