Move libvpx from DEPS to src

third_party/libvpx/source/libvpx/vp9/encoder/vp9_bitstream.h

Index: third_party/libvpx/source/libvpx/vp9/encoder/vp9_bitstream.h
diff --git a/third_party/libvpx/source/libvpx/vp9/encoder/vp9_bitstream.h b/third_party/libvpx/source/libvpx/vp9/encoder/vp9_bitstream.h
new file mode 100644
index 0000000000000000000000000000000000000000..da6b4146422502910d584c76c19067ee090c7aa5
--- /dev/null
+++ b/third_party/libvpx/source/libvpx/vp9/encoder/vp9_bitstream.h
@@ -0,0 +1,37 @@
+/*
+ *  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_BITSTREAM_H_
+#define VP9_ENCODER_VP9_BITSTREAM_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "vp9/encoder/vp9_encoder.h"
+
+void vp9_pack_bitstream(VP9_COMP *cpi, uint8_t *dest, size_t *size);
+
+static INLINE int vp9_preserve_existing_gf(VP9_COMP *cpi) {
+  return !cpi->multi_arf_allowed && cpi->refresh_golden_frame &&
+         cpi->rc.is_src_frame_alt_ref &&
+         (!cpi->use_svc ||      // Add spatial svc base layer case here
+          (is_two_pass_svc(cpi) &&
+           cpi->svc.spatial_layer_id == 0 &&
+           cpi->svc.layer_context[0].gold_ref_idx >=0 &&
+           cpi->oxcf.ss_enable_auto_arf[0]));
+}
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // VP9_ENCODER_VP9_BITSTREAM_H_