libvpx: Pull from upstream

source/libvpx/vp9/common/vp9_scale.h

 /*
  *  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.
  */
 
@@ skipping 22 matching lines @@
 
   convolve_fn_t predict[2][2][2];  // horiz, vert, avg
 };
 
 MV32 vp9_scale_mv(const MV *mv, int x, int y, const struct scale_factors *sf);
 
 void vp9_setup_scale_factors_for_frame(struct scale_factors *sf,
                                        int other_w, int other_h,
                                        int this_w, int this_h);
 
-static int vp9_is_valid_scale(const struct scale_factors *sf) {
+static INLINE int vp9_is_valid_scale(const struct scale_factors *sf) {
   return sf->x_scale_fp != REF_INVALID_SCALE &&
          sf->y_scale_fp != REF_INVALID_SCALE;
 }
 
-static int vp9_is_scaled(const struct scale_factors *sf) {
+static INLINE int vp9_is_scaled(const struct scale_factors *sf) {
   return sf->x_scale_fp != REF_NO_SCALE ||
          sf->y_scale_fp != REF_NO_SCALE;
 }
 
 #ifdef __cplusplus
 }  // extern "C"
 #endif
 
 #endif  // VP9_COMMON_VP9_SCALE_H_