Reduced the lifetime of DownloadCreateInfo.

chrome/browser/history/download_history_info.cc

+// Copyright (c) 2011 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 "chrome/browser/history/download_history_info.h"
+
+#include "chrome/browser/download/download_item.h"
+
+DownloadHistoryInfo::DownloadHistoryInfo()
+    : download_id(-1),
+      received_bytes(0),
+      total_bytes(0),
+      state(0),
+      db_handle(0) {
+}
+
+DownloadHistoryInfo::DownloadHistoryInfo(const std::vector<GURL>& urls,
+                                         const GURL& referrer,
+                                         int64 total_bytes)
+    : download_id(-1),
+      url_chain(urls),
+      referrer_url(referrer),
+      start_time(base::Time::Now()),
+      received_bytes(0),
+      total_bytes(total_bytes),
+      state(0),
+      db_handle(0) {
+}
+
+DownloadHistoryInfo::DownloadHistoryInfo(const FilePath& path,
+                                         const GURL& url,
+                                         const base::Time& start,
+                                         int64 received,
+                                         int64 total,
+                                         int32 download_state)
+    : download_id(1),
+      path(path),
+      url_chain(1, url),
+      start_time(start),
+      received_bytes(received),
+      total_bytes(total),
+      state(download_state),
+      db_handle(0) {
+}
+
+DownloadHistoryInfo::DownloadHistoryInfo(const FilePath& path,
+                                         const std::vector<GURL>& url,
+                                         const GURL& referrer,
+                                         const base::Time& start,
+                                         int64 received,
+                                         int64 total,
+                                         int32 download_state,
+                                         int64 handle,
+                                         int32 id)
+    : download_id(id),
+      path(path),
+      url_chain(url),
+      referrer_url(referrer),
+      start_time(start),
+      received_bytes(received),
+      total_bytes(total),
+      state(download_state),
+      db_handle(handle) {
+}
+
+const GURL& DownloadHistoryInfo::url() const {
+  return url_chain.empty() ? GURL::EmptyGURL() : url_chain.back();
+}