Issue 4125 - [emscripten] Convert filter classes to C++

compiled/CSSPropertyFilter.h

+#ifndef ADBLOCK_PLUS_CSS_PROPERTY_FILTER_H
+#define ADBLOCK_PLUS_CSS_PROPERTY_FILTER_H
+
+#include <cstddef>
+
+#include "Filter.h"
+#include "ElemHideBase.h"
+
+class CSSPropertyFilter: public ElemHideBase
+{
+private:
+  String mRegexpSource;
+  String mPrefix;
+  String mSuffix;
+public:
+  CSSPropertyFilter(const String& text, String::size_type domainsEnd,
+      String::size_type selectorStart, String::size_type prefixEnd,
+      String::size_type regexpStart, String::size_type regexpEnd,
+      String::size_type suffixStart);
+  Type GetType() const;
+  String GetRegExpString();
+  const String GetSelectorPrefix()
+  {
+    return mPrefix;
+  }
+  const String GetSelectorSuffix()
+  {
+    return mSuffix;
+  }
+};
+
+#endif