Issue 5201 - [emscripten] Replace EM_ASM calls by a custom JavaScript library

compiled/library.h

Index: compiled/library.h
===================================================================
new file mode 100644
--- /dev/null
+++ b/compiled/library.h
@@ -0,0 +1,42 @@
+/*
+ * 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
+
+class String;
+class Filter;
+class Subscription;
+
+namespace FilterNotifier
+{
+  enum class Topic;
+}
+
+extern "C"
+{
+  void LogString(const String& str);
+  void LogInteger(int i);
+  void LogPointer(const void* ptr);
+  void LogError(const String& str);
+  char16_t CharToLower(char16_t charCode);
+  void JSNotifyFilterChange(FilterNotifier::Topic topic, Filter* filter);
+  void JSNotifySubscriptionChange(FilterNotifier::Topic topic,
+      Subscription* subscription);
+  int GenerateRegExp(const String& regexp, bool matchCase);
+  void DeleteRegExp(int id);
+  bool TestRegExp(int id, const String& str);
+}