[Download] Return DownloadInterruptReason from OnStartedCallback

content/public/browser/resource_dispatcher_host.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 CONTENT_PUBLIC_BROWSER_RESOURCE_DISPATCHER_HOST_H_
 #define CONTENT_PUBLIC_BROWSER_RESOURCE_DISPATCHER_HOST_H_
 
 #include "base/callback_forward.h"
-#include "net/base/net_errors.h"
+#include "base/memory/scoped_ptr.h"
+#include "content/public/browser/download_interrupt_reasons.h"
 
 namespace net {
 class URLRequest;
 }
 
 namespace content {
 
 class DownloadItem;
 class ResourceContext;
 class ResourceDispatcherHostDelegate;
 struct DownloadSaveInfo;
 struct Referrer;
 
 class CONTENT_EXPORT ResourceDispatcherHost {
  public:
-  typedef base::Callback<void(DownloadItem*, net::Error)>
-    DownloadStartedCallback;
+  typedef base::Callback<void(DownloadItem*, DownloadInterruptReason)>
+      DownloadStartedCallback;
 
   // Returns the singleton instance of the ResourceDispatcherHost.
   static ResourceDispatcherHost* Get();
 
   // This does not take ownership of the delegate. It is expected that the
   // delegate have a longer lifetime than the ResourceDispatcherHost.
   virtual void SetDelegate(ResourceDispatcherHostDelegate* delegate) = 0;
 
   // Controls whether third-party sub-content can pop-up HTTP basic auth
   // dialog boxes.
   virtual void SetAllowCrossOriginAuthPrompt(bool value) = 0;
 
   // Initiates a download by explicit request of the renderer (e.g. due to
   // alt-clicking a link) or some other chrome subsystem.
   // |is_content_initiated| is used to indicate that the request was generated
   // from a web page, and hence may not be as trustworthy as a browser
   // generated request.  If |download_id| is invalid, a download id will be
   // automatically assigned to the request, otherwise the specified download id
   // will be used.  (Note that this will result in re-use of an existing
   // download item if the download id was already assigned.)  If the download
   // is started, |started_callback| will be called on the UI thread with the
-  // DownloadItem; otherwise an error code will be returned.
-  virtual net::Error BeginDownload(
+  // DownloadItem; otherwise an interrupt reason will be returned.
+  virtual DownloadInterruptReason BeginDownload(
       scoped_ptr<net::URLRequest> request,
       const Referrer& referrer,
       bool is_content_initiated,
       ResourceContext* context,
       int child_id,
       int route_id,
       bool prefer_cache,
       scoped_ptr<DownloadSaveInfo> save_info,
       uint32 download_id,
       const DownloadStartedCallback& started_callback) = 0;
 
   // Clears the ResourceDispatcherHostLoginDelegate associated with the request.
   virtual void ClearLoginDelegateForRequest(net::URLRequest* request) = 0;
 
   // Causes all new requests for the route identified by |child_id| and
   // |route_id| to be blocked (not being started) until
   // ResumeBlockedRequestsForRoute is called.
   virtual void BlockRequestsForRoute(int child_id, int route_id) = 0;
 
   // Resumes any blocked request for the specified route id.
   virtual void ResumeBlockedRequestsForRoute(int child_id, int route_id) = 0;
 
  protected:
   virtual ~ResourceDispatcherHost() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_RESOURCE_DISPATCHER_HOST_H_