Issue 4127 - [emscripten] Convert subscription classes to C++ - Part 1

compiled/subscription/UserDefinedSubscription.h

+/*
+ * This file is part of Adblock Plus <https://adblockplus.org/>,
+ * Copyright (C) 2006-2017 eyeo GmbH
+ *
+ * Adblock Plus is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * Adblock Plus is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "Subscription.h"
+#include "../filter/Filter.h"
+
+class UserDefinedSubscription : public Subscription
+{
+private:
+  int mDefaults;
+
+public:
+  explicit UserDefinedSubscription(const String& id);
+  EMSCRIPTEN_KEEPALIVE bool IsDefaultFor(const Filter* filter) const;
+  EMSCRIPTEN_KEEPALIVE void MakeDefaultFor(const Filter* filter);
+  EMSCRIPTEN_KEEPALIVE OwnedString Serialize() const;
+};