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

experimental/PdfViewer/SkPdfAttributeObjectDictionary_autogen.h

Index: experimental/PdfViewer/SkPdfAttributeObjectDictionary_autogen.h
===================================================================
--- experimental/PdfViewer/SkPdfAttributeObjectDictionary_autogen.h	(revision 9684)
+++ experimental/PdfViewer/SkPdfAttributeObjectDictionary_autogen.h	(working copy)
@@ -5,6 +5,7 @@
 #include "SkPdfArray_autogen.h"
 #include "SkPdfDictionary_autogen.h"
 
+// Entry common to all attribute objects
 class SkPdfAttributeObjectDictionary : public SkPdfDictionary {
 public:
   virtual SkPdfObjectType getType() const { return kAttributeObjectDictionary_SkPdfObjectType;}
@@ -521,6 +522,13 @@
 
   SkPdfAttributeObjectDictionary& operator=(const SkPdfAttributeObjectDictionary& from) {this->fPodofoDoc = from.fPodofoDoc; this->fPodofoObj = from.fPodofoObj; return *this;}
 
+/** (Required) The name of the application or plug-in extension owning the attribute data.
+ *  The name must conform to the guidelines described in Appendix E.
+**/
+  bool has_O() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "O", "", NULL));
+  }
+
   std::string O() const {
     std::string ret;
     if (NameFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "O", "", &ret)) return ret;