add libvpx 89cc6825 (matching current chrome canary) from repo https://chromium.googlesource.com/webm/libvpx

libs/libvpx/vpx_dsp/bitwriter_buffer.h

@@ -0,0 +1,38 @@
+/*
+ *  Copyright (c) 2013 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 VPX_DSP_BITWRITER_BUFFER_H_
+#define VPX_DSP_BITWRITER_BUFFER_H_
+
+#include "vpx/vpx_integer.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct vpx_write_bit_buffer {
+  uint8_t *bit_buffer;
+  size_t bit_offset;
+};
+
+size_t vpx_wb_bytes_written(const struct vpx_write_bit_buffer *wb);
+
+void vpx_wb_write_bit(struct vpx_write_bit_buffer *wb, int bit);
+
+void vpx_wb_write_literal(struct vpx_write_bit_buffer *wb, int data, int bits);
+
+void vpx_wb_write_inv_signed_literal(struct vpx_write_bit_buffer *wb, int data,
+                                     int bits);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // VPX_DSP_BITWRITER_BUFFER_H_