remove now all the files fro depot for PDF API since we generate them at build time

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

-#include "SkPdfReferenceDictionary_autogen.h"
-
-SkPdfFileSpec SkPdfReferenceDictionary::F() const {
-  SkPdfFileSpec ret;
-  if (FileSpecFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "F", "", &ret)) return ret;
-  // TODO(edisonn): warn about missing required field, assert for known good pdfs
-  return SkPdfFileSpec();
-}
-
-long SkPdfReferenceDictionary::getPageAsInteger() const {
-  long ret = 0;
-  if (LongFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Page", "", &ret)) return ret;
-  // TODO(edisonn): warn about missing required field, assert for known good pdfs
-  return 0;
-}
-
-std::string SkPdfReferenceDictionary::getPageAsString() const {
-  std::string ret = "";
-  if (StringFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Page", "", &ret)) return ret;
-  // TODO(edisonn): warn about missing required field, assert for known good pdfs
-  return "";
-}
-
-SkPdfArray* SkPdfReferenceDictionary::ID() const {
-  SkPdfArray* ret;
-  if (ArrayFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "ID", "", &ret)) return ret;
-  // TODO(edisonn): warn about missing required field, assert for known good pdfs
-  return NULL;
-}