ConvertUTF8toUCS2( buffer_type* aBuffer ) : mStart(aBuffer), mBuffer(aBuffer) {}
ConvertUTF8toUCS2( buffer_type* aBuffer ) : mStart(aBuffer), mBuffer(aBuffer), mErrorEncountered(PR_FALSE) {}
    ConvertUTF8toUCS2( buffer_type* aBuffer ) : mStart(aBuffer), mBuffer(aBuffer) {}