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diff --git a/third_party/aom/av1/decoder/decodeframe.h b/third_party/aom/av1/decoder/decodeframe.h
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+++ b/third_party/aom/av1/decoder/decodeframe.h
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+/*
+ * 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_DECODER_DECODEFRAME_H_
+#define AOM_AV1_DECODER_DECODEFRAME_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct AV1Decoder;
+struct aom_read_bit_buffer;
+struct ThreadData;
+
+// Reads the middle part of the sequence header OBU (from
+// frame_width_bits_minus_1 to enable_restoration) into seq_params.
+// Reports errors by calling rb->error_handler() or aom_internal_error().
+void av1_read_sequence_header(AV1_COMMON *cm, struct aom_read_bit_buffer *rb,
+                              SequenceHeader *seq_params);
+
+void av1_read_frame_size(struct aom_read_bit_buffer *rb, int num_bits_width,
+                         int num_bits_height, int *width, int *height);
+BITSTREAM_PROFILE av1_read_profile(struct aom_read_bit_buffer *rb);
+
+// Returns 0 on success. Sets pbi->common.error.error_code and returns -1 on
+// failure.
+int av1_check_trailing_bits(struct AV1Decoder *pbi,
+                            struct aom_read_bit_buffer *rb);
+
+// On success, returns the frame header size. On failure, calls
+// aom_internal_error and does not return.
+// TODO(wtc): Figure out and document the p_data_end parameter.
+uint32_t av1_decode_frame_headers_and_setup(struct AV1Decoder *pbi,
+                                            struct aom_read_bit_buffer *rb,
+                                            const uint8_t *data,
+                                            const uint8_t **p_data_end,
+                                            int trailing_bits_present);
+
+void av1_decode_tg_tiles_and_wrapup(struct AV1Decoder *pbi, const uint8_t *data,
+                                    const uint8_t *data_end,
+                                    const uint8_t **p_data_end, int startTile,
+                                    int endTile, int initialize_flag);
+
+// Implements the color_config() function in the spec. Reports errors by
+// calling rb->error_handler() or aom_internal_error().
+void av1_read_color_config(struct aom_read_bit_buffer *rb,
+                           int allow_lowbitdepth, SequenceHeader *seq_params,
+                           struct aom_internal_error_info *error_info);
+
+// Implements the timing_info() function in the spec. Reports errors by calling
+// rb->error_handler().
+void av1_read_timing_info_header(AV1_COMMON *cm,
+                                 struct aom_read_bit_buffer *rb);
+
+// Implements the decoder_model_info() function in the spec. Reports errors by
+// calling rb->error_handler().
+void av1_read_decoder_model_info(AV1_COMMON *cm,
+                                 struct aom_read_bit_buffer *rb);
+
+// Implements the operating_parameters_info() function in the spec. Reports
+// errors by calling rb->error_handler() or aom_internal_error().
+void av1_read_op_parameters_info(AV1_COMMON *const cm,
+                                 struct aom_read_bit_buffer *rb, int op_num);
+
+struct aom_read_bit_buffer *av1_init_read_bit_buffer(
+    struct AV1Decoder *pbi, struct aom_read_bit_buffer *rb, const uint8_t *data,
+    const uint8_t *data_end);
+
+void av1_free_mc_tmp_buf(struct ThreadData *thread_data);
+
+void av1_set_single_tile_decoding_mode(AV1_COMMON *const cm);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // AOM_AV1_DECODER_DECODEFRAME_H_