Deal with ca and CA transparency operators in pdf. add comments to generated classes.

experimental/PdfViewer/SkPdfEncryptedEmbeddedFileStreamDictionary_autogen.h

 #ifndef __DEFINED__SkPdfEncryptedEmbeddedFileStreamDictionary
 #define __DEFINED__SkPdfEncryptedEmbeddedFileStreamDictionary
 
 #include "SkPdfEnums_autogen.h"
 #include "SkPdfArray_autogen.h"
 #include "SkPdfDictionary_autogen.h"
 
+// Additional entry in an embedded file stream dictionary for an encrypted FDF file
 class SkPdfEncryptedEmbeddedFileStreamDictionary : public SkPdfDictionary {
 public:
   virtual SkPdfObjectType getType() const { return kEncryptedEmbeddedFileStreamDictionary_SkPdfObjectType;}
   virtual SkPdfObjectType getTypeEnd() const { return (SkPdfObjectType)(kEncryptedEmbeddedFileStreamDictionary_SkPdfObjectType + 1);}
 public:
   virtual SkPdfEncryptedEmbeddedFileStreamDictionary* asEncryptedEmbeddedFileStreamDictionary() {return this;}
   virtual const SkPdfEncryptedEmbeddedFileStreamDictionary* asEncryptedEmbeddedFileStreamDictionary() const {return this;}
 
 private:
   virtual SkPdfALinkAnnotationDictionary* asALinkAnnotationDictionary() {return NULL;}
@@ skipping 496 matching lines @@
 
 public:
 private:
 public:
   SkPdfEncryptedEmbeddedFileStreamDictionary(const PdfMemDocument* podofoDoc = NULL, const PdfObject* podofoObj = NULL) : SkPdfDictionary(podofoDoc, podofoObj) {}
 
   virtual bool valid() const {return true;}
 
   SkPdfEncryptedEmbeddedFileStreamDictionary& operator=(const SkPdfEncryptedEmbeddedFileStreamDictionary& from) {this->fPodofoDoc = from.fPodofoDoc; this->fPodofoObj = from.fPodofoObj; return *this;}
 
+/** (Required if the FDF file is encrypted; PDF 1.4) The revision number of the
+ *  FDF encryption algorithm used to encrypt the file. The only valid value
+ *  defined at the time of publication is 1.
+**/
+  bool has_EncryptionRevision() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "EncryptionRevision", "", NULL));
+  }
+
   long EncryptionRevision() const {
     long ret;
     if (LongFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "EncryptionRevision", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return 0;
   }
 
 };
 
 #endif  // __DEFINED__SkPdfEncryptedEmbeddedFileStreamDictionary