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

experimental/PdfViewer/SkPdfNamedActionsDictionary_autogen.h

 #ifndef __DEFINED__SkPdfNamedActionsDictionary
 #define __DEFINED__SkPdfNamedActionsDictionary
 
 #include "SkPdfEnums_autogen.h"
 #include "SkPdfArray_autogen.h"
 #include "SkPdfDictionary_autogen.h"
 
+// Additional entries specific to named actions
 class SkPdfNamedActionsDictionary : public SkPdfDictionary {
 public:
   virtual SkPdfObjectType getType() const { return kNamedActionsDictionary_SkPdfObjectType;}
   virtual SkPdfObjectType getTypeEnd() const { return (SkPdfObjectType)(kNamedActionsDictionary_SkPdfObjectType + 1);}
 public:
   virtual SkPdfNamedActionsDictionary* asNamedActionsDictionary() {return this;}
   virtual const SkPdfNamedActionsDictionary* asNamedActionsDictionary() const {return this;}
 
 private:
   virtual SkPdfALinkAnnotationDictionary* asALinkAnnotationDictionary() {return NULL;}
@@ skipping 496 matching lines @@
 
 public:
 private:
 public:
   SkPdfNamedActionsDictionary(const PdfMemDocument* podofoDoc = NULL, const PdfObject* podofoObj = NULL) : SkPdfDictionary(podofoDoc, podofoObj) {}
 
   virtual bool valid() const {return true;}
 
   SkPdfNamedActionsDictionary& operator=(const SkPdfNamedActionsDictionary& from) {this->fPodofoDoc = from.fPodofoDoc; this->fPodofoObj = from.fPodofoObj; return *this;}
 
+/** (Required) The type of action that this dictionary describes; must be Named for a named
+ *  action.
+**/
+  bool has_S() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "S", "", NULL));
+  }
+
   std::string S() const {
     std::string ret;
     if (NameFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "S", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return "";
   }
 
+/** (Required) The name of the action to be performed (see Table 8.45).
+**/
+  bool has_N() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "N", "", NULL));
+  }
+
   std::string N() const {
     std::string ret;
     if (NameFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "N", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return "";
   }
 
 };
 
 #endif  // __DEFINED__SkPdfNamedActionsDictionary