Fix DownloadNotificationService foreground state

chrome/android/java/src/org/chromium/chrome/browser/download/SystemDownloadNotifier.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.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.ServiceConnection;
@@ skipping 281 matching lines @@
             case DOWNLOAD_NOTIFICATION_TYPE_CANCEL:
                 mBoundService.notifyDownloadCanceled(info.getDownloadGuid());
                 break;
             case DOWNLOAD_NOTIFICATION_TYPE_RESUME_ALL:
                 mBoundService.resumeAllPendingDownloads();
                 break;
             default:
                 assert false;
         }
 
-        if (mBoundService != null) mBoundService.hideSummaryNotificationIfNecessary();
+        // Don't need to expose the notification id to ignore.  Cancel will automatically call this
+        // method as well and pass it in.
+        if (mBoundService != null) mBoundService.hideSummaryNotificationIfNecessary(null);
         if (autoRelease) unbindServiceIfNeeded();
     }
 }