Remove null entries from UMA stats SharedPrefs

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

 // Copyright 2016 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 org.chromium.base.Log;
 
 /**
  * SharedPreferences entries for for helping report UMA stats. A download may require several
@@ skipping 39 matching lines @@
             try {
                 boolean useDownloadManager = "1".equals(values[0]);
                 boolean isPaused = "1".equals(values[1]);
                 long downloadStartTime = Long.parseLong(values[2]);
                 int numInterruptions = Integer.parseInt(values[3]);
                 String id = values[4];
                 long lastReceived = 0;
                 long wasted = 0;
                 if (values.length == 7) {
                     lastReceived = Long.parseLong(values[5].trim());
-                    wasted = Integer.parseInt(values[6].trim());
+                    wasted = Long.parseLong(values[6].trim());
                 }
                 return new DownloadUmaStatsEntry(
                         id, downloadStartTime, numInterruptions, isPaused, useDownloadManager,
                         lastReceived, wasted);
             } catch (NumberFormatException nfe) {
                 Log.w(TAG, "Exception while parsing UMA entry:" + sharedPrefString);
             }
         }
         return null;
     }
@@ skipping 17 matching lines @@
         if (useDownloadManager) {
             item.setSystemDownloadId(Long.parseLong(id));
         } else {
             DownloadInfo info = new DownloadInfo.Builder().setDownloadGuid(id)
                     .setBytesReceived(lastBytesReceived).build();
             item.setDownloadInfo(info);
         }
         return item;
     }
 }