libvpx: Pull from upstream

source/libvpx/vp9/common/vp9_alloccommon.c

 /*
  *  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.
  */
 
@@ skipping 182 matching lines @@
   if (!cm->last_frame_seg_map)
     goto fail;
 
   return 0;
 
  fail:
   vp9_free_frame_buffers(cm);
   return 1;
 }
 
-void vp9_create_common(VP9_COMMON *cm) {
-  vp9_machine_specific_config(cm);
-}
-
 void vp9_remove_common(VP9_COMMON *cm) {
   vp9_free_frame_buffers(cm);
   vp9_free_internal_frame_buffers(&cm->int_frame_buffers);
 }
 
 void vp9_initialize_common() {
   vp9_init_neighbors();
 }
 
 void vp9_update_frame_size(VP9_COMMON *cm) {
   const int aligned_width = ALIGN_POWER_OF_TWO(cm->width, MI_SIZE_LOG2);
   const int aligned_height = ALIGN_POWER_OF_TWO(cm->height, MI_SIZE_LOG2);
 
   set_mb_mi(cm, aligned_width, aligned_height);
   setup_mi(cm);
 
   // Initialize the previous frame segment map to 0.
   if (cm->last_frame_seg_map)
     vpx_memset(cm->last_frame_seg_map, 0, cm->mi_rows * cm->mi_cols);
 }