[Downloads] Always call DM::StartDownload() for explicit downloads.

content/browser/loader/resource_dispatcher_host_impl.h

Index: content/browser/loader/resource_dispatcher_host_impl.h
diff --git a/content/browser/loader/resource_dispatcher_host_impl.h b/content/browser/loader/resource_dispatcher_host_impl.h
index 29a82b248a109c7890fec7e0c2f5b6d2ff717d4c..c71bbbdb592487c54a796686a260c0236dfb650c 100644
--- a/content/browser/loader/resource_dispatcher_host_impl.h
+++ b/content/browser/loader/resource_dispatcher_host_impl.h
@@ -91,19 +91,6 @@ class CONTENT_EXPORT ResourceDispatcherHostImpl
   // ResourceDispatcherHost implementation:
   void SetDelegate(ResourceDispatcherHostDelegate* delegate) override;
   void SetAllowCrossOriginAuthPrompt(bool value) override;
-  DownloadInterruptReason BeginDownload(
-      scoped_ptr<net::URLRequest> request,
-      const Referrer& referrer,
-      bool is_content_initiated,
-      ResourceContext* context,
-      int child_id,
-      int render_view_route_id,
-      int render_frame_route_id,
-      bool prefer_cache,
-      bool do_not_prompt_for_login,
-      scoped_ptr<DownloadSaveInfo> save_info,
-      uint32_t download_id,
-      const DownloadStartedCallback& started_callback) override;
   void ClearLoginDelegateForRequest(net::URLRequest* request) override;
   void BlockRequestsForRoute(int child_id, int route_id) override;
   void ResumeBlockedRequestsForRoute(int child_id, int route_id) override;
@@ -127,6 +114,15 @@ class CONTENT_EXPORT ResourceDispatcherHostImpl
   bool OnMessageReceived(const IPC::Message& message,
                          ResourceMessageFilter* filter);
 
+  DownloadInterruptReason BeginDownload(scoped_ptr<net::URLRequest> request,
+                                        const Referrer& referrer,
+                                        bool is_content_initiated,
+                                        ResourceContext* context,
+                                        int child_id,
+                                        int render_view_route_id,
+                                        int render_frame_route_id,
+                                        bool do_not_prompt_for_login);
+
   // Initiates a save file from the browser process (as opposed to a resource
   // request from the renderer or another child process).
   void BeginSaveFile(const GURL& url,
@@ -228,10 +224,7 @@ class CONTENT_EXPORT ResourceDispatcherHostImpl
   virtual scoped_ptr<ResourceHandler> CreateResourceHandlerForDownload(
       net::URLRequest* request,
       bool is_content_initiated,
-      bool must_download,
-      uint32_t id,
-      scoped_ptr<DownloadSaveInfo> save_info,
-      const DownloadUrlParameters::OnStartedCallback& started_cb);
+      bool must_download);
 
   // Called to determine whether the response to |request| should be intercepted
   // and handled as a stream. Streams are used to pass direct access to a