Use the new java_cpp_enum rule in net.

net/android/java/PrivateKeyType.template

Index: net/android/java/PrivateKeyType.template
diff --git a/net/android/java/PrivateKeyType.template b/net/android/java/PrivateKeyType.template
deleted file mode 100644
index aa7f76f8881fc63b977979b5810ea0ee5dca9a70..0000000000000000000000000000000000000000
--- a/net/android/java/PrivateKeyType.template
+++ /dev/null
@@ -1,10 +0,0 @@
-// Copyright (c) 2013 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.net;
-
-public class PrivateKeyType {
-#define DEFINE_PRIVATE_KEY_TYPE(name,value) public static final int name = value;
-#include "net/android/private_key_type_list.h"
-}