Don't cancel download when dismissing the notification

chrome/android/java/src/org/chromium/chrome/browser/download/DownloadServiceDelegate.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;
 
 /** Interface for classes implementing concrete implementation of UI behavior. */
 public interface DownloadServiceDelegate {
     /**
      * Called to cancel a download.
      * @param downloadGuid GUID of the download.
      * @param isOffTheRecord Whether the download is off the record.
-     * @param isNotificationDismissed Whether cancel is caused by dismissing the notification.
      */
-    void cancelDownload(String downloadGuid, boolean isOffTheRecord,
-            boolean isNotificationDismissed);
+    void cancelDownload(String downloadGuid, boolean isOffTheRecord);
 
     /**
      * Called to pause a download.
      * @param downloadGuid GUID of the download.
      * @param isOffTheRecord Whether the download is off the record.
      */
     void pauseDownload(String downloadGuid, boolean isOffTheRecord);
 
     /**
      * Called to resume a paused download.
      * @param item Download item to resume.
      * @param hasUserGesture Whether the resumption is triggered by user gesture.
      * TODO(fgorski): Update the interface to not require download item.
      */
     void resumeDownload(DownloadItem item, boolean hasUserGesture);
 
     /** Called to destroy the delegate, in case it needs to be destroyed. */
     void destroyServiceDelegate();
 }