Allow supporting older PICTURE_VERSIONs.

include/core/SkPicture.h

Index: include/core/SkPicture.h
diff --git a/include/core/SkPicture.h b/include/core/SkPicture.h
index b2c2b62edec4ee3684dc4ef4ef3129a1e29f2ad8..157c4cafb6afb93a0dfb6b1a22ca23f587997169 100644
--- a/include/core/SkPicture.h
+++ b/include/core/SkPicture.h
@@ -192,7 +192,6 @@ public:
     void abortPlayback();
 #endif
 
-protected:
     // V2 : adds SkPixelRef's generation ID.
     // V3 : PictInfo tag at beginning, and EOF tag at the end
     // V4 : move SkPictInfo to be the header
@@ -206,6 +205,7 @@ protected:
     // V11: modify how readBitmap and writeBitmap store their info.
     static const uint32_t PICTURE_VERSION = 11;
 
+protected:
     // fPlayback, fRecord, fWidth & fHeight are protected to allow derived classes to
     // install their own SkPicturePlayback-derived players,SkPictureRecord-derived
     // recorders and set the picture size