refactoring for pdf viewer lib

experimental/PdfViewer/autogen/SkPdfEncryptionCommonDictionary_autogen.cpp

+#include "SkPdfEncryptionCommonDictionary_autogen.h"
+
+std::string SkPdfEncryptionCommonDictionary::Filter() const {
+  std::string ret;
+  if (NameFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Filter", "", &ret)) return ret;
+  // TODO(edisonn): warn about missing required field, assert for known good pdfs
+  return "";
+}
+
+double SkPdfEncryptionCommonDictionary::V() const {
+  double ret;
+  if (DoubleFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "V", "", &ret)) return ret;
+  // TODO(edisonn): warn about missing required field, assert for known good pdfs
+  return 0;
+}
+
+long SkPdfEncryptionCommonDictionary::Length() const {
+  long ret;
+  if (LongFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Length", "", &ret)) return ret;
+  // TODO(edisonn): warn about missing required field, assert for known good pdfs
+  return 0;
+}
+