refactoring for pdf viewer lib

experimental/PdfViewer/autogen/SkPdfSoftMaskImageDictionary_autogen.h

 #ifndef __DEFINED__SkPdfSoftMaskImageDictionary
 #define __DEFINED__SkPdfSoftMaskImageDictionary
 
 #include "SkPdfUtils.h"
 #include "SkPdfEnums_autogen.h"
 #include "SkPdfArray_autogen.h"
 #include "SkPdfDictionary_autogen.h"
 
 // Additional entry in a soft-mask image dictionary
 class SkPdfSoftMaskImageDictionary : public SkPdfDictionary {
@@ skipping 518 matching lines @@
  *  which the image data in the parent image has been preblended. The array consists of n
  *  numbers, where n is the number of components in the color space specified by the
  *  ColorSpace entry in the parent image's image dictionary; the numbers must be valid
  *  color components in that color space. If this entry is absent, the image data is not pre-
  *  blended.
 **/
   bool has_Matte() const {
     return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Matte", "", NULL));
   }
 
-  SkPdfArray* Matte() const {
-    SkPdfArray* ret;
-    if (ArrayFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Matte", "", &ret)) return ret;
-    // TODO(edisonn): warn about missing required field, assert for known good pdfs
-    return NULL;
-  }
-
+  SkPdfArray* Matte() const;
 };
 
 #endif  // __DEFINED__SkPdfSoftMaskImageDictionary