libvpx: Pull from upstream

source/libvpx/vp9/common/vp9_enums.h

Index: source/libvpx/vp9/common/vp9_enums.h
===================================================================
--- source/libvpx/vp9/common/vp9_enums.h	(revision 263011)
+++ source/libvpx/vp9/common/vp9_enums.h	(working copy)
@@ -25,7 +25,24 @@
 
 #define MI_MASK (MI_BLOCK_SIZE - 1)
 
+// Bitstream profiles indicated by 2 bits in the uncompressed header.
+// 00: Profile 0. 4:2:0 only.
+// 10: Profile 1. adds 4:4:4, 4:2:2, alpha.
+// 01: Profile 2. Supports 10-bit and 12-bit color only.
+// 11: Undefined profile.
+typedef enum BITSTREAM_PROFILE {
+  PROFILE_0,
+  PROFILE_1,
+  PROFILE_2,
+  MAX_PROFILES
+} BITSTREAM_PROFILE;
 
+typedef enum BIT_DEPTH {
+  BITS_8,
+  BITS_10,
+  BITS_12
+} BIT_DEPTH;
+
 typedef enum BLOCK_SIZE {
   BLOCK_4X4,
   BLOCK_4X8,
@@ -94,6 +111,12 @@
   SRGB       = 7   // RGB
 } COLOR_SPACE;
 
+typedef enum {
+  VP9_LAST_FLAG = 1 << 0,
+  VP9_GOLD_FLAG = 1 << 1,
+  VP9_ALT_FLAG = 1 << 2,
+} VP9_REFFRAME;
+
 #ifdef __cplusplus
 }  // extern "C"
 #endif