Handle zero-length encoded images gracefully during deserialization

include/core/SkPicture.h

Index: include/core/SkPicture.h
diff --git a/include/core/SkPicture.h b/include/core/SkPicture.h
index 774b5424428d2684cbfaa7359090148e4fa09b46..61a584b61d9bd365847713a95b0e0c85a2126b9f 100644
--- a/include/core/SkPicture.h
+++ b/include/core/SkPicture.h
@@ -103,9 +103,7 @@ public:
 
     /**
      *  Serialize to a stream. If non NULL, serializer will be used to serialize
-     *  any bitmaps in the picture.
-     *
-     *  TODO: Use serializer to serialize SkImages as well.
+     *  bitmaps and images in the picture.
      */
     void serialize(SkWStream*, SkPixelSerializer* = NULL) const;