pdfviewer: check in pdfapi classes

experimental/PdfViewer/pdfparser/native/pdfapi/SkPdfComponentsWithMetadataDictionary_autogen.cpp

+#include "SkPdfComponentsWithMetadataDictionary_autogen.h"
+
+
+#include "SkPdfNativeDoc.h"
+SkPdfStream* SkPdfComponentsWithMetadataDictionary::Metadata(SkPdfNativeDoc* doc) {
+  SkPdfNativeObject* ret = get("Metadata", "");
+  if (doc) {ret = doc->resolveReference(ret);}
+  if ((ret != NULL && ret->hasStream()) || (doc == NULL && ret != NULL && ret->isReference())) return ret->getStream();
+  // TODO(edisonn): warn about missing default value for optional fields
+  return NULL;
+}
+
+bool SkPdfComponentsWithMetadataDictionary::has_Metadata() const {
+  return get("Metadata", "") != NULL;
+}
+