refactoring for pdf viewer lib

experimental/PdfViewer/autogen/SkPdfFDFTrailerDictionary_autogen.h

 #ifndef __DEFINED__SkPdfFDFTrailerDictionary
 #define __DEFINED__SkPdfFDFTrailerDictionary
 
 #include "SkPdfUtils.h"
 #include "SkPdfEnums_autogen.h"
 #include "SkPdfArray_autogen.h"
 #include "SkPdfDictionary_autogen.h"
 
 // Entry in the FDF trailer dictionary
 class SkPdfFDFTrailerDictionary : public SkPdfDictionary {
@@ skipping 514 matching lines @@
 
   SkPdfFDFTrailerDictionary& operator=(const SkPdfFDFTrailerDictionary& from) {this->fPodofoDoc = from.fPodofoDoc; this->fPodofoObj = from.fPodofoObj; return *this;}
 
 /** (Required; must be an indirect reference) The catalog object for this FDF file (see
  *  "FDF Catalog," below).
 **/
   bool has_Root() const {
     return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Root", "", NULL));
   }
 
-  SkPdfDictionary* Root() const {
-    SkPdfDictionary* ret;
-    if (DictionaryFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Root", "", &ret)) return ret;
-    // TODO(edisonn): warn about missing required field, assert for known good pdfs
-    return NULL;
-  }
-
+  SkPdfDictionary* Root() const;
 };
 
 #endif  // __DEFINED__SkPdfFDFTrailerDictionary