libvpx: Pull from upstream

source/libvpx/vp9/encoder/vp9_mbgraph.h

 /*
  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #ifndef VP9_ENCODER_VP9_MBGRAPH_H_
 #define VP9_ENCODER_VP9_MBGRAPH_H_
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-void vp9_update_mbgraph_stats(VP9_COMP *cpi);
+typedef struct {
+  struct {
+    int err;
+    union {
+      int_mv mv;
+      MB_PREDICTION_MODE mode;
+    } m;
+  } ref[MAX_REF_FRAMES];
+} MBGRAPH_MB_STATS;
+
+typedef struct {
+  MBGRAPH_MB_STATS *mb_stats;
+} MBGRAPH_FRAME_STATS;
+
+struct VP9_COMP;
+
+void vp9_update_mbgraph_stats(struct VP9_COMP *cpi);
 
 #ifdef __cplusplus
 }  // extern "C"
 #endif
 
 #endif  // VP9_ENCODER_VP9_MBGRAPH_H_