libvpx: Pull from upstream

source/libvpx/vp9/encoder/vp9_firstpass.h

Index: source/libvpx/vp9/encoder/vp9_firstpass.h
diff --git a/source/libvpx/vp9/encoder/vp9_firstpass.h b/source/libvpx/vp9/encoder/vp9_firstpass.h
index 4a0385506db4f938e0a6af82e05055485928d540..00479322d311256a12db2878d76fc1c012b44e39 100644
--- a/source/libvpx/vp9/encoder/vp9_firstpass.h
+++ b/source/libvpx/vp9/encoder/vp9_firstpass.h
@@ -51,6 +51,8 @@ typedef struct {
   double pcnt_motion;
   double pcnt_second_ref;
   double pcnt_neutral;
+  double intra_skip_pct;
+  double inactive_zone_rows;  // Image mask rows top and bottom.
   double MVr;
   double mvr_abs;
   double MVc;
@@ -73,6 +75,13 @@ typedef enum {
   FRAME_UPDATE_TYPES = 5
 } FRAME_UPDATE_TYPE;
 
+#define FC_ANIMATION_THRESH 0.15
+typedef enum {
+  FC_NORMAL = 0,
+  FC_GRAPHICS_ANIMATION = 1,
+  FRAME_CONTENT_TYPES = 2
+} FRAME_CONTENT_TYPE;
+
 typedef struct {
   unsigned char index;
   RATE_FACTOR_LEVEL rf_level[(MAX_LAG_BUFFERS * 2) + 1];
@@ -103,6 +112,8 @@ typedef struct {
   uint8_t *this_frame_mb_stats;
   FIRSTPASS_MB_STATS firstpass_mb_stats;
 #endif
+  // An indication of the content type of the current frame
+  FRAME_CONTENT_TYPE fr_content_type;
 
   // Projected total bits available for a key frame group of frames
   int64_t kf_group_bits;