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

content/browser/loader/mime_type_resource_handler.cc

 // 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.
 
 #include "content/browser/loader/mime_type_resource_handler.h"
 
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 367 matching lines @@
     bool handled_by_plugin;
     if (!SelectPluginHandler(defer, &handled_by_plugin))
       return false;
     if (handled_by_plugin || *defer)
       return true;
   }
 
   // Install download handler
   info->set_is_download(true);
   scoped_ptr<ResourceHandler> handler(
-      host_->CreateResourceHandlerForDownload(
-          request(),
-          true,  // is_content_initiated
-          must_download,
-          DownloadItem::kInvalidId,
-          scoped_ptr<DownloadSaveInfo>(new DownloadSaveInfo()),
-          DownloadUrlParameters::OnStartedCallback()));
+      host_->CreateResourceHandlerForDownload(request(),
+                                              true,  // is_content_initiated
+                                              must_download));
   return UseAlternateNextHandler(std::move(handler), std::string());
 }
 
 bool MimeTypeResourceHandler::UseAlternateNextHandler(
     scoped_ptr<ResourceHandler> new_handler,
     const std::string& payload_for_old_handler) {
   if (response_->head.headers.get() &&  // Can be NULL if FTP.
       response_->head.headers->response_code() / 100 != 2) {
     // The response code indicates that this is an error page, but we don't
     // know how to display the content.  We follow Firefox here and show our
@@ skipping 110 matching lines @@
   request()->LogUnblocked();
   bool defer = false;
   if (!ProcessResponse(&defer)) {
     controller()->Cancel();
   } else if (!defer) {
     controller()->Resume();
   }
 }
 
 }  // namespace content