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

experimental/PdfViewer/SkPdfBoxColorInformationDictionary_autogen.h

 #ifndef __DEFINED__SkPdfBoxColorInformationDictionary
 #define __DEFINED__SkPdfBoxColorInformationDictionary
 
 #include "SkPdfEnums_autogen.h"
 #include "SkPdfArray_autogen.h"
 #include "SkPdfDictionary_autogen.h"
 
+// Entries in a box color information dictionary
 class SkPdfBoxColorInformationDictionary : public SkPdfDictionary {
 public:
   virtual SkPdfObjectType getType() const { return kBoxColorInformationDictionary_SkPdfObjectType;}
   virtual SkPdfObjectType getTypeEnd() const { return (SkPdfObjectType)(kBoxColorInformationDictionary_SkPdfObjectType + 1);}
 public:
   virtual SkPdfBoxColorInformationDictionary* asBoxColorInformationDictionary() {return this;}
   virtual const SkPdfBoxColorInformationDictionary* asBoxColorInformationDictionary() const {return this;}
 
 private:
   virtual SkPdfALinkAnnotationDictionary* asALinkAnnotationDictionary() {return NULL;}
@@ skipping 496 matching lines @@
 
 public:
 private:
 public:
   SkPdfBoxColorInformationDictionary(const PdfMemDocument* podofoDoc = NULL, const PdfObject* podofoObj = NULL) : SkPdfDictionary(podofoDoc, podofoObj) {}
 
   virtual bool valid() const {return true;}
 
   SkPdfBoxColorInformationDictionary& operator=(const SkPdfBoxColorInformationDictionary& from) {this->fPodofoDoc = from.fPodofoDoc; this->fPodofoObj = from.fPodofoObj; return *this;}
 
+/** (Optional) A box style dictionary (see Table 9.42) specifying the visual characteris-
+ *  tics for displaying guidelines for the page's crop box. This entry is ignored if no crop
+ *  box is defined in the page object.
+**/
+  bool has_CropBox() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "CropBox", "", NULL));
+  }
+
   SkPdfDictionary* CropBox() const {
     SkPdfDictionary* ret;
     if (DictionaryFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "CropBox", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return NULL;
   }
 
+/** (Optional) A box style dictionary (see Table 9.42) specifying the visual characteris-
+ *  tics for displaying guidelines for the page's bleed box. This entry is ignored if no
+ *  bleed box is defined in the page object.
+**/
+  bool has_BleedBox() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "BleedBox", "", NULL));
+  }
+
   SkPdfDictionary* BleedBox() const {
     SkPdfDictionary* ret;
     if (DictionaryFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "BleedBox", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return NULL;
   }
 
+/** (Optional) A box style dictionary (see Table 9.42) specifying the visual characteris-
+ *  tics for displaying guidelines for the page's trim box. This entry is ignored if no trim
+ *  box is defined in the page object.
+**/
+  bool has_TrimBox() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "TrimBox", "", NULL));
+  }
+
   SkPdfDictionary* TrimBox() const {
     SkPdfDictionary* ret;
     if (DictionaryFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "TrimBox", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return NULL;
   }
 
+/** (Optional) A box style dictionary (see Table 9.42) specifying the visual characteris-
+ *  tics for displaying guidelines for the page's art box. This entry is ignored if no art
+ *  box is defined in the page object.
+**/
+  bool has_ArtBox() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "ArtBox", "", NULL));
+  }
+
   SkPdfDictionary* ArtBox() const {
     SkPdfDictionary* ret;
     if (DictionaryFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "ArtBox", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return NULL;
   }
 
 };
 
 #endif  // __DEFINED__SkPdfBoxColorInformationDictionary