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

experimental/PdfViewer/SkPdfPageTreeNodeDictionary_autogen.h

 #ifndef __DEFINED__SkPdfPageTreeNodeDictionary
 #define __DEFINED__SkPdfPageTreeNodeDictionary
 
 #include "SkPdfEnums_autogen.h"
 #include "SkPdfArray_autogen.h"
 #include "SkPdfDictionary_autogen.h"
 
+// Required entries in a page tree node
 class SkPdfPageTreeNodeDictionary : public SkPdfDictionary {
 public:
   virtual SkPdfObjectType getType() const { return kPageTreeNodeDictionary_SkPdfObjectType;}
   virtual SkPdfObjectType getTypeEnd() const { return (SkPdfObjectType)(kPageTreeNodeDictionary_SkPdfObjectType + 1);}
 public:
   virtual SkPdfPageTreeNodeDictionary* asPageTreeNodeDictionary() {return this;}
   virtual const SkPdfPageTreeNodeDictionary* asPageTreeNodeDictionary() const {return this;}
 
 private:
   virtual SkPdfALinkAnnotationDictionary* asALinkAnnotationDictionary() {return NULL;}
@@ skipping 496 matching lines @@
 
 public:
 private:
 public:
   SkPdfPageTreeNodeDictionary(const PdfMemDocument* podofoDoc = NULL, const PdfObject* podofoObj = NULL) : SkPdfDictionary(podofoDoc, podofoObj) {}
 
   virtual bool valid() const {return true;}
 
   SkPdfPageTreeNodeDictionary& operator=(const SkPdfPageTreeNodeDictionary& from) {this->fPodofoDoc = from.fPodofoDoc; this->fPodofoObj = from.fPodofoObj; return *this;}
 
+/** (Required) The type of PDF object that this dictionary describes; must be Pages for
+ *  a page tree node.
+**/
+  bool has_Type() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Type", "", NULL));
+  }
+
   std::string Type() const {
     std::string ret;
     if (NameFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Type", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return "";
   }
 
+/** (Required except in root node; must be an indirect reference) The page tree node that
+ *  is the immediate parent of this one.
+**/
+  bool has_Parent() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Parent", "", NULL));
+  }
+
   SkPdfDictionary* Parent() const {
     SkPdfDictionary* ret;
     if (DictionaryFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Parent", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return NULL;
   }
 
+/** (Required) An array of indirect references to the immediate children of this node.
+ *  The children may be page objects or other page tree nodes.
+**/
+  bool has_Kids() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Kids", "", NULL));
+  }
+
   SkPdfArray Kids() const {
     SkPdfArray ret;
     if (ArrayFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Kids", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return SkPdfArray();
   }
 
+/** (Required) The number of leaf nodes (page objects) that are descendants of this
+ *  node within the page tree.
+**/
+  bool has_Count() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Count", "", NULL));
+  }
+
   long Count() const {
     long ret;
     if (LongFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Count", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return 0;
   }
 
 };
 
 #endif  // __DEFINED__SkPdfPageTreeNodeDictionary