Replace the DownloadFileManager with direct ownership

content/browser/download/download_file_factory.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_file_factory.h"
+
+#include "content/browser/download/download_file_impl.h"
+#include "content/browser/power_save_blocker.h"
+
+namespace content {
+
+DownloadFileFactory::~DownloadFileFactory() {}
+
+content::DownloadFile* DownloadFileFactory::CreateFile(
+    const content::DownloadSaveInfo& save_info,
+    GURL url,
+    GURL referrer_url,
+    int64 received_bytes,
+    bool calculate_hash,
+    scoped_ptr<content::ByteStreamReader> stream,
+    const net::BoundNetLog& bound_net_log,
+    base::WeakPtr<content::DownloadDestinationObserver> observer) {
+  scoped_ptr<content::PowerSaveBlocker> psb(
+      new content::PowerSaveBlocker(
+          content::PowerSaveBlocker::kPowerSaveBlockPreventAppSuspension,
+          "Download in progress"));
+  return new DownloadFileImpl(
+      save_info, url, referrer_url, received_bytes, calculate_hash,
+      stream.Pass(), bound_net_log, psb.Pass(), observer);
+}
+
+}  // namespace content