use offline bolt icon for download completion notification

chrome/android/java/src/org/chromium/chrome/browser/download/DownloadNotificationService.java

 // Copyright 2015 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.
 
 package org.chromium.chrome.browser.download;
 
 import android.app.ActivityManager;
 import android.app.DownloadManager;
 import android.app.Notification;
 import android.app.NotificationManager;
@@ skipping 317 matching lines @@
      * @param downloadGuid GUID of the download.
      * @param fileName GUID of the download.
      * @param systemDownloadId Download ID assigned by system DownloadManager.
      * @return ID of the successful download notification. Used for removing the notification when
      *         user click on the snackbar.
      */
     public int notifyDownloadSuccessful(
             String downloadGuid, String fileName, long systemDownloadId, boolean isOfflinePage) {
         int notificationId = getNotificationId(downloadGuid);
         NotificationCompat.Builder builder = buildNotification(
-                android.R.drawable.stat_sys_download_done, fileName,
+                R.drawable.offline_pin, fileName,
                 mContext.getResources().getString(R.string.download_notification_completed));
         ComponentName component = new ComponentName(
                 mContext.getPackageName(), DownloadBroadcastReceiver.class.getName());
         Intent intent;
         if (isOfflinePage) {
             intent = buildActionIntent(ACTION_DOWNLOAD_OPEN, notificationId, downloadGuid, fileName,
                     isOfflinePage);
         } else {
             intent = new Intent(DownloadManager.ACTION_NOTIFICATION_CLICKED);
             long[] idArray = {systemDownloadId};
@@ skipping 440 matching lines @@
             return context.getString(R.string.remaining_duration_minutes, minutes);
         } else if (minutes > 0) {
             return context.getString(R.string.remaining_duration_one_minute);
         } else if (seconds == 1) {
             return context.getString(R.string.remaining_duration_one_second);
         } else {
             return context.getString(R.string.remaining_duration_seconds, seconds);
         }
     }
 }