Use the new java_cpp_enum rule in net.

net/android/java/CertificateMimeType.template

Index: net/android/java/CertificateMimeType.template
diff --git a/net/android/java/CertificateMimeType.template b/net/android/java/CertificateMimeType.template
deleted file mode 100644
index 5a21171e88b3d49d136cf56aad466e82631f897f..0000000000000000000000000000000000000000
--- a/net/android/java/CertificateMimeType.template
+++ /dev/null
@@ -1,11 +0,0 @@
-// Copyright (c) 2012 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 CertificateMimeType {
-#define CERTIFICATE_MIME_TYPE(name, value) public static final int name = value;
-#include "net/base/mime_util_certificate_type_list.h"
-#undef CERTIFICATE_MIME_TYPE
-}