Add flag to specify if explicitly requested download is from web.

content/browser/renderer_host/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 57 matching lines @@
 
   // Returns the current ResourceDispatcherHostImpl. May return NULL if it
   // hasn't been created yet.
   static ResourceDispatcherHostImpl* Get();
 
   // ResourceDispatcherHost implementation:
   virtual void SetDelegate(ResourceDispatcherHostDelegate* delegate) OVERRIDE;
   virtual void SetAllowCrossOriginAuthPrompt(bool value) OVERRIDE;
   virtual net::Error BeginDownload(
       scoped_ptr<net::URLRequest> request,
+      bool is_content_initiated,
       ResourceContext* context,
       int child_id,
       int route_id,
       bool prefer_cache,
       const DownloadSaveInfo& save_info,
       const DownloadStartedCallback& started_callback) OVERRIDE;
   virtual void ClearLoginDelegateForRequest(net::URLRequest* request) OVERRIDE;
   virtual void MarkAsTransferredNavigation(net::URLRequest* request) OVERRIDE;
 
   // Puts the resource dispatcher host in an inactive state (unable to begin
@@ skipping 161 matching lines @@
   ResourceDispatcherHostDelegate* delegate() {
     return delegate_;
   }
 
   scoped_refptr<ResourceHandler> CreateResourceHandlerForDownload(
       net::URLRequest* request,
       ResourceContext* context,
       int child_id,
       int route_id,
       int request_id,
+      bool is_content_initiated,
       const DownloadSaveInfo& save_info,
       const DownloadResourceHandler::OnStartedCallback& started_cb);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(ResourceDispatcherHostTest,
                            TestBlockedRequestsProcessDies);
   FRIEND_TEST_ALL_PREFIXES(ResourceDispatcherHostTest,
                            IncrementOutstandingRequestsMemoryCost);
   FRIEND_TEST_ALL_PREFIXES(ResourceDispatcherHostTest,
                            CalculateApproximateMemoryCost);
@@ skipping 246 matching lines @@
   // http://crbug.com/90971 - Assists in tracking down use-after-frees on
   // shutdown.
   std::set<const ResourceContext*> canceled_resource_contexts_;
 
   DISALLOW_COPY_AND_ASSIGN(ResourceDispatcherHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RESOURCE_DISPATCHER_HOST_IMPL_H_