WIP - Refactor programmatic downloads

content/browser/renderer_host/render_message_filter.cc

Index: content/browser/renderer_host/render_message_filter.cc
diff --git a/content/browser/renderer_host/render_message_filter.cc b/content/browser/renderer_host/render_message_filter.cc
index 29e1e1f199a4d0cfe286083e5f870ecdcd337bcf..7adc14c0a302b7210dcddf110603b37b5a277777 100644
--- a/content/browser/renderer_host/render_message_filter.cc
+++ b/content/browser/renderer_host/render_message_filter.cc
@@ -40,6 +40,7 @@
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/download_save_info.h"
+#include "content/public/browser/download_url_parameters.h"
 #include "content/public/browser/plugin_service_filter.h"
 #include "content/public/browser/resource_context.h"
 #include "content/public/browser/user_metrics.h"
@@ -202,6 +203,24 @@ class OpenChannelToPpapiBrokerCallback
   int routing_id_;
 };
 
+// Run on the UI thread to initiate a download.
+void BeginDownloadOnUIThread(int render_process_id,
+                             int routing_id,
+                             const GURL& url,
+                             const content::Referrer& referrer,
+                             const string16& suggested_name,
+                             ResourceContext* resource_context) {
+  RenderProcessHost* rph = RenderProcessHost::FromID(render_process_id);
+  DownloadManager* download_manager =
+      BrowserContext::GetDownloadManager(rph->GetBrowserContext());
+  scoped_ptr<DownloadUrlParameters> download_params(new DownloadUrlParameters(
+      url, render_process_id, routing_id, resource_context));
+  download_params->set_suggested_name(suggested_name);
+  download_params->set_referrer(referrer);
+  download_params->set_content_initiated(true);
+  download_manager->DownloadUrl(download_params.Pass());
+}
+
 }  // namespace
 
 class RenderMessageFilter::OpenChannelToNpapiPluginCallback
@@ -831,22 +850,15 @@ void RenderMessageFilter::OnDownloadUrl(const IPC::Message& message,
                                         const GURL& url,
                                         const Referrer& referrer,
                                         const string16& suggested_name) {
-  scoped_ptr<DownloadSaveInfo> save_info(new DownloadSaveInfo());
-  save_info->suggested_name = suggested_name;
-  scoped_ptr<net::URLRequest> request(
-      resource_context_->GetRequestContext()->CreateRequest(url, NULL));
-  RecordDownloadSource(INITIATED_BY_RENDERER);
-  resource_dispatcher_host_->BeginDownload(
-      request.Pass(),
-      referrer,
-      true,  // is_content_initiated
-      resource_context_,
-      render_process_id_,
-      message.routing_id(),
-      false,
-      save_info.Pass(),
-      content::DownloadItem::kInvalidId,
-      ResourceDispatcherHostImpl::DownloadStartedCallback());
+  BrowserThread::PostTask(BrowserThread::UI,
+                          FROM_HERE,
+                          base::Bind(&BeginDownloadOnUIThread,
+                                     render_process_id_,
+                                     message.routing_id(),
+                                     url,
+                                     referrer,
+                                     suggested_name,
+                                     resource_context_));
 }
 
 void RenderMessageFilter::OnCheckNotificationPermission(