diff -r 000000000000 -r 6474c204b198 media/libvpx/vp9/common/vp9_mv.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/media/libvpx/vp9/common/vp9_mv.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,39 @@
+/*
+ *  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_COMMON_VP9_MV_H_
+#define VP9_COMMON_VP9_MV_H_
+
+#include "vpx/vpx_integer.h"
+
+#include "vp9/common/vp9_common.h"
+
+typedef struct {
+  int16_t row;
+  int16_t col;
+} MV;
+
+typedef union int_mv {
+  uint32_t as_int;
+  MV as_mv;
+} int_mv; /* facilitates faster equality tests and copies */
+
+typedef struct {
+  int32_t row;
+  int32_t col;
+} MV32;
+
+static void clamp_mv(MV *mv, int min_col, int max_col,
+                             int min_row, int max_row) {
+  mv->col = clamp(mv->col, min_col, max_col);
+  mv->row = clamp(mv->row, min_row, max_row);
+}
+
+#endif  // VP9_COMMON_VP9_MV_H_