libvpx: Pull from upstream

source/libvpx/vp9/encoder/vp9_mcomp.h

Index: source/libvpx/vp9/encoder/vp9_mcomp.h
diff --git a/source/libvpx/vp9/encoder/vp9_mcomp.h b/source/libvpx/vp9/encoder/vp9_mcomp.h
index bba48fd6ef381d4fb50d743f670640814cfccaf0..dd8a4607942c4a0b468af0959bfb53cccc97226d 100644
--- a/source/libvpx/vp9/encoder/vp9_mcomp.h
+++ b/source/libvpx/vp9/encoder/vp9_mcomp.h
@@ -72,7 +72,7 @@ int vp9_refining_search_sad(const struct macroblock *x,
                             const struct vp9_variance_vtable *fn_ptr,
                             const struct mv *center_mv);
 
-// Runs sequence of diamond searches in smaller steps for RD
+// Runs sequence of diamond searches in smaller steps for RD.
 int vp9_full_pixel_diamond(const struct VP9_COMP *cpi, MACROBLOCK *x,
                            MV *mvp_full, int step_param,
                            int sadpb, int further_steps, int do_refine,
@@ -80,6 +80,11 @@ int vp9_full_pixel_diamond(const struct VP9_COMP *cpi, MACROBLOCK *x,
                            const vp9_variance_fn_ptr_t *fn_ptr,
                            const MV *ref_mv, MV *dst_mv);
 
+// Perform integral projection based motion estimation.
+unsigned int vp9_int_pro_motion_estimation(const struct VP9_COMP *cpi,
+                                           MACROBLOCK *x,
+                                           BLOCK_SIZE bsize);
+
 typedef int (integer_mv_pattern_search_fn) (
     const MACROBLOCK *x,
     MV *ref_mv,