Start downloads as a new task

 Bug: 5661310

Change-Id: Ib6d4d08474116d6a222eedd0cf40830c9286a2dd
diff --git a/src/com/android/browser/DownloadHandler.java b/src/com/android/browser/DownloadHandler.java
index 17ad320..6e2c786 100644
--- a/src/com/android/browser/DownloadHandler.java
+++ b/src/com/android/browser/DownloadHandler.java
@@ -67,6 +67,7 @@
             //     that matches.
             Intent intent = new Intent(Intent.ACTION_VIEW);
             intent.setDataAndType(Uri.parse(url), mimetype);
+            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
             ResolveInfo info = activity.getPackageManager().resolveActivity(intent,
                     PackageManager.MATCH_DEFAULT_ONLY);
             if (info != null) {