refactor folders to make prepare for native pdf parser

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

 #include "SkPdfThreadDictionary_autogen.h"
 
 std::string SkPdfThreadDictionary::Type() const {
   std::string ret;
   if (NameFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Type", "", &ret)) return ret;
   // TODO(edisonn): warn about missing required field, assert for known good pdfs
   return "";
 }
 
 SkPdfDictionary* SkPdfThreadDictionary::F() const {
   SkPdfDictionary* ret;
   if (DictionaryFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "F", "", &ret)) return ret;
   // TODO(edisonn): warn about missing required field, assert for known good pdfs
   return NULL;
 }
 
 SkPdfDictionary* SkPdfThreadDictionary::I() const {
   SkPdfDictionary* ret;
   if (DictionaryFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "I", "", &ret)) return ret;
   // TODO(edisonn): warn about missing required field, assert for known good pdfs
   return NULL;
 }