libvpx: Pull from upstream

source/libvpx/vp9/common/vp9_prob.h

Index: source/libvpx/vp9/common/vp9_prob.h
===================================================================
--- source/libvpx/vp9/common/vp9_prob.h	(revision 290053)
+++ source/libvpx/vp9/common/vp9_prob.h	(working copy)
@@ -44,21 +44,12 @@
 typedef const vp9_tree_index vp9_tree[];
 
 static INLINE vp9_prob clip_prob(int p) {
-  return (p > 255) ? 255u : (p < 1) ? 1u : p;
+  return (p > 255) ? 255 : (p < 1) ? 1 : p;
 }
 
-// int64 is not needed for normal frame level calculations.
-// However when outputting entropy stats accumulated over many frames
-// or even clips we can overflow int math.
-#ifdef ENTROPY_STATS
 static INLINE vp9_prob get_prob(int num, int den) {
   return (den == 0) ? 128u : clip_prob(((int64_t)num * 256 + (den >> 1)) / den);
 }
-#else
-static INLINE vp9_prob get_prob(int num, int den) {
-  return (den == 0) ? 128u : clip_prob((num * 256 + (den >> 1)) / den);
-}
-#endif
 
 static INLINE vp9_prob get_binary_prob(int n0, int n1) {
   return get_prob(n0, n0 + n1);