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

content/browser/download/download_create_info.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/download/download_create_info.h"
 
 #include <string>
-#include <utility>
 
 #include "base/format_macros.h"
 #include "base/strings/stringprintf.h"
 
 namespace content {
 
 DownloadCreateInfo::DownloadCreateInfo(const base::Time& start_time,
-                                       int64_t total_bytes,
                                        const net::BoundNetLog& bound_net_log,
                                        scoped_ptr<DownloadSaveInfo> save_info)
-    : start_time(start_time),
-      total_bytes(total_bytes),
-      download_id(DownloadItem::kInvalidId),
+    : download_id(DownloadItem::kInvalidId),
+      start_time(start_time),
+      total_bytes(0),
       has_user_gesture(false),
       transition_type(ui::PAGE_TRANSITION_LINK),
+      result(DOWNLOAD_INTERRUPT_REASON_NONE),
       save_info(std::move(save_info)),
       request_bound_net_log(bound_net_log) {}
 
 DownloadCreateInfo::DownloadCreateInfo()
     : DownloadCreateInfo(base::Time(),
-                         0,
                          net::BoundNetLog(),
                          make_scoped_ptr(new DownloadSaveInfo)) {}
 
 DownloadCreateInfo::~DownloadCreateInfo() {}
 
 std::string DownloadCreateInfo::DebugString() const {
   return base::StringPrintf(
       "{"
       " download_id = %u"
       " url = \"%s\""
       " request_handle = %s"
       " total_bytes = %" PRId64 " }",
       download_id, url().spec().c_str(), request_handle->DebugString().c_str(),
       total_bytes);
 }
 
 const GURL& DownloadCreateInfo::url() const {
   return url_chain.empty() ? GURL::EmptyGURL() : url_chain.back();
 }
 
 }  // namespace content