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

compiled/CSSPropertyFilter.cpp

 #include "CSSPropertyFilter.h"
 #include "RegExpFilter.h"
 
 CSSPropertyFilter::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)
-    : ElemHideBase(text, domainsEnd, selectorStart),
-      mPrefix(String(mText, selectorStart, prefixEnd - selectorStart)),
-      mSuffix(String(mText, suffixStart)),
-      mRegexpSource(String(mText, regexpStart, regexpEnd - regexpStart))
+    const ElemHideData& data)
+    : ElemHideBase(Type::CSSPROPERTY, text, data), mPropertyData(data)
 {
-  if (IsGeneric())
-    throw u"No active domain specified for CSS property filter"_str;
 }
 
-Filter::Type CSSPropertyFilter::GetType() const
+OwnedString CSSPropertyFilter::GetRegExpString() const
 {
-  return Type::CSSPROPERTY;
+  return RegExpFilter::RegExpFromSource(mPropertyData.GetRegExpSource(mText));
 }
-
-String CSSPropertyFilter::GetRegExpString()
-{
-  return RegExpFilter::RegExpFromSource(mRegexpSource);
-}