pdfviewer: debug the parameters for snc, and for resolveReference

experimental/PdfViewer/pdfparser/native/SkNativeParsedPDF.cpp

 #include "SkNativeParsedPDF.h"
 #include "SkPdfNativeTokenizer.h"
 #include "SkPdfBasics.h"
 #include "SkPdfObject.h"
 
 #include <stdio.h>
 #include <string.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 
@@ skipping 501 matching lines @@
         // TODO(edisonn): generation/updates not supported now
         //int gen = ref->referenceGeneration();
 
         // TODO(edisonn): verify id and gen expected
         if (id < 0 || id >= fObjects.count()) {
             // TODO(edisonn): report error/warning
             return NULL;
         }
 
         if (fObjects[id].fResolvedReference != NULL) {
+
+#ifdef PDF_TRACE
+            printf("\nresolve(%s) = %s\n", ref->toString(0).c_str(), fObjects[id].fResolvedReference->toString(0, ref->toString().size() + 13).c_str());
+#endif
+
             return fObjects[id].fResolvedReference;
         }
 
         if (fObjects[id].fObj == NULL) {
             fObjects[id].fObj = readObject(id);
         }
 
         if (fObjects[id].fResolvedReference == NULL) {
             if (!fObjects[id].fObj->isReference()) {
                 fObjects[id].fResolvedReference = fObjects[id].fObj;
             } else {
                 fObjects[id].fResolvedReference = resolveReference(fObjects[id].fObj);
             }
         }
 
+#ifdef PDF_TRACE
+        printf("\nresolve(%s) = %s\n", ref->toString(0).c_str(), fObjects[id].fResolvedReference->toString(0, ref->toString().size() + 13).c_str());
+#endif
         return fObjects[id].fResolvedReference;
     }
+
+
+
     // TODO(edisonn): fix the mess with const, probably we need to remove it pretty much everywhere
     return (SkPdfObject*)ref;
 }
 
 size_t SkNativeParsedPDF::bytesUsed() const {
     return fAllocator->bytesUsed() +
            fContentLength +
            fObjects.count() * sizeof(PublicObjectEntry) +
            fPages.count() * sizeof(SkPdfPageObjectDictionary*) +
            sizeof(*this);
 }