Use the system downloads UI, instead of browser specific 1.

Bug:3034564

Change-Id: Id850854da7db9c1a36500c9eee9debad64bdf97e
diff --git a/src/com/android/browser/BrowserActivity.java b/src/com/android/browser/BrowserActivity.java
index 72ed2ec..101157c 100644
--- a/src/com/android/browser/BrowserActivity.java
+++ b/src/com/android/browser/BrowserActivity.java
@@ -47,6 +47,7 @@
 import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
 import android.net.ConnectivityManager;
+import android.net.DownloadManager;
 import android.net.NetworkInfo;
 import android.net.Uri;
 import android.net.WebAddress;
@@ -1447,7 +1448,7 @@
                 break;
 
             case R.id.view_downloads_menu_id:
-                viewDownloads(null);
+                viewDownloads();
                 break;
 
             case R.id.window_one_menu_id:
@@ -3566,12 +3567,9 @@
      * menu to see the download window. It shows the download window on top of
      * the current window.
      */
-    private void viewDownloads(Uri downloadRecord) {
-        Intent intent = new Intent(this,
-                BrowserDownloadPage.class);
-        intent.setData(downloadRecord);
-        startActivityForResult(intent, BrowserActivity.DOWNLOAD_PAGE);
-
+    private void viewDownloads() {
+        Intent intent = new Intent(DownloadManager.ACTION_VIEW_DOWNLOADS);
+        startActivity(intent);
     }
 
     /**
@@ -3994,7 +3992,6 @@
 
     // activity requestCode
     final static int COMBO_PAGE                 = 1;
-    final static int DOWNLOAD_PAGE              = 2;
     final static int PREFERENCES_PAGE           = 3;
     final static int FILE_SELECTED              = 4;