libvpx: Pull from upstream

source/libvpx/vp8/encoder/onyx_int.h

Index: source/libvpx/vp8/encoder/onyx_int.h
===================================================================
--- source/libvpx/vp8/encoder/onyx_int.h	(revision 290053)
+++ source/libvpx/vp8/encoder/onyx_int.h	(working copy)
@@ -511,6 +511,8 @@
     int cyclic_refresh_mode_index;
     int cyclic_refresh_q;
     signed char *cyclic_refresh_map;
+    // Count on how many (consecutive) times a macroblock uses ZER0MV_LAST.
+    unsigned char *consec_zero_last;
 
     // Frame counter for the temporal pattern. Counter is rest when the temporal
     // layers are changed dynamically (run-time change).
@@ -682,9 +684,10 @@
     int    mr_low_res_mb_cols;
     /* Indicate if lower-res mv info is available */
     unsigned char  mr_low_res_mv_avail;
+#endif
     /* The frame number of each reference frames */
     unsigned int current_ref_frames[MAX_REF_FRAMES];
-#endif
+    MV_REFERENCE_FRAME closest_reference_frame;
 
     struct rd_costs_struct
     {