refactoring for pdf viewer lib

experimental/PdfViewer/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;
+}
+