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diff --git a/media/libaom/src/av1/common/resize.h b/media/libaom/src/av1/common/resize.h
new file mode 100644
index 000000000..9a59a8d63
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+++ b/media/libaom/src/av1/common/resize.h
@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#ifndef AOM_AV1_COMMON_RESIZE_H_
+#define AOM_AV1_COMMON_RESIZE_H_
+
+#include <stdio.h>
+#include "aom/aom_integer.h"
+#include "av1/common/onyxc_int.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void av1_resize_plane(const uint8_t *const input, int height, int width,
+                      int in_stride, uint8_t *output, int height2, int width2,
+                      int out_stride);
+void av1_resize_frame420(const uint8_t *const y, int y_stride,
+                         const uint8_t *const u, const uint8_t *const v,
+                         int uv_stride, int height, int width, uint8_t *oy,
+                         int oy_stride, uint8_t *ou, uint8_t *ov,
+                         int ouv_stride, int oheight, int owidth);
+void av1_resize_frame422(const uint8_t *const y, int y_stride,
+                         const uint8_t *const u, const uint8_t *const v,
+                         int uv_stride, int height, int width, uint8_t *oy,
+                         int oy_stride, uint8_t *ou, uint8_t *ov,
+                         int ouv_stride, int oheight, int owidth);
+void av1_resize_frame444(const uint8_t *const y, int y_stride,
+                         const uint8_t *const u, const uint8_t *const v,
+                         int uv_stride, int height, int width, uint8_t *oy,
+                         int oy_stride, uint8_t *ou, uint8_t *ov,
+                         int ouv_stride, int oheight, int owidth);
+
+void av1_highbd_resize_plane(const uint8_t *const input, int height, int width,
+                             int in_stride, uint8_t *output, int height2,
+                             int width2, int out_stride, int bd);
+void av1_highbd_resize_frame420(const uint8_t *const y, int y_stride,
+                                const uint8_t *const u, const uint8_t *const v,
+                                int uv_stride, int height, int width,
+                                uint8_t *oy, int oy_stride, uint8_t *ou,
+                                uint8_t *ov, int ouv_stride, int oheight,
+                                int owidth, int bd);
+void av1_highbd_resize_frame422(const uint8_t *const y, int y_stride,
+                                const uint8_t *const u, const uint8_t *const v,
+                                int uv_stride, int height, int width,
+                                uint8_t *oy, int oy_stride, uint8_t *ou,
+                                uint8_t *ov, int ouv_stride, int oheight,
+                                int owidth, int bd);
+void av1_highbd_resize_frame444(const uint8_t *const y, int y_stride,
+                                const uint8_t *const u, const uint8_t *const v,
+                                int uv_stride, int height, int width,
+                                uint8_t *oy, int oy_stride, uint8_t *ou,
+                                uint8_t *ov, int ouv_stride, int oheight,
+                                int owidth, int bd);
+void av1_resize_and_extend_frame(const YV12_BUFFER_CONFIG *src,
+                                 YV12_BUFFER_CONFIG *dst, int bd,
+                                 const int num_planes);
+
+void av1_upscale_normative_rows(const AV1_COMMON *cm, const uint8_t *src,
+                                int src_stride, uint8_t *dst, int dst_stride,
+                                int plane, int rows);
+void av1_upscale_normative_and_extend_frame(const AV1_COMMON *cm,
+                                            const YV12_BUFFER_CONFIG *src,
+                                            YV12_BUFFER_CONFIG *dst);
+
+YV12_BUFFER_CONFIG *av1_scale_if_required(AV1_COMMON *cm,
+                                          YV12_BUFFER_CONFIG *unscaled,
+                                          YV12_BUFFER_CONFIG *scaled);
+
+// Calculates the scaled dimensions from the given original dimensions and the
+// resize scale denominator.
+void av1_calculate_scaled_size(int *width, int *height, int resize_denom);
+
+// Similar to above, but calculates scaled dimensions after superres from the
+// given original dimensions and superres scale denominator.
+void av1_calculate_scaled_superres_size(int *width, int *height,
+                                        int superres_denom);
+
+// Inverse of av1_calculate_scaled_superres_size() above: calculates the
+// original dimensions from the given scaled dimensions and the scale
+// denominator.
+void av1_calculate_unscaled_superres_size(int *width, int *height, int denom);
+
+void av1_superres_upscale(AV1_COMMON *cm, BufferPool *const pool);
+
+// Returns 1 if a superres upscaled frame is scaled and 0 otherwise.
+static INLINE int av1_superres_scaled(const AV1_COMMON *cm) {
+  // Note: for some corner cases (e.g. cm->width of 1), there may be no scaling
+  // required even though cm->superres_scale_denominator != SCALE_NUMERATOR.
+  // So, the following check is more accurate.
+  return !(cm->width == cm->superres_upscaled_width);
+}
+
+#define UPSCALE_NORMATIVE_TAPS 8
+extern const int16_t av1_resize_filter_normative[1 << RS_SUBPEL_BITS]
+                                                [UPSCALE_NORMATIVE_TAPS];
+
+int32_t av1_get_upscale_convolve_step(int in_length, int out_length);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // AOM_AV1_COMMON_RESIZE_H_