refactor folders to make prepare for native pdf parser

experimental/PdfViewer/pdfparser/podofo/autogen/SkPdfURLAliasDictionary_autogen.cpp

 #include "SkPdfURLAliasDictionary_autogen.h"
 
 std::string SkPdfURLAliasDictionary::U() const {
   std::string ret;
   if (StringFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "U", "", &ret)) return ret;
   // TODO(edisonn): warn about missing required field, assert for known good pdfs
   return "";
 }
 
 SkPdfArray* SkPdfURLAliasDictionary::C() const {
   SkPdfArray* ret;
   if (ArrayFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "C", "", &ret)) return ret;
   // TODO(edisonn): warn about missing required field, assert for known good pdfs
   return NULL;
 }