webm_info: output VP9 row tile info

Change-Id: Iaa2ae9248b57e299f13c8d4567cfeae17a4339b2

webm_info.cc

diff --git a/webm_info.cc b/webm_info.cc
index b647199..c9fad2d 100644
--- a/webm_info.cc
+++ b/webm_info.cc
@@ -726,6 +726,7 @@
     const int key = parser->key();
     const int altref_frame = parser->altref();
     const int error_resilient_mode = parser->error_resilient_mode();
+    const int row_tiles = parser->row_tiles();
     const int column_tiles = parser->column_tiles();
     const int frame_parallel_mode = parser->frame_parallel_mode();
 
@@ -756,9 +757,9 @@
       fprintf(o, " packed [%d]: {", i);
     }
 
-    fprintf(o, " key:%d v:%d altref:%d errm:%d ct:%d fpm:%d", key, version,
-            altref_frame, error_resilient_mode, column_tiles,
-            frame_parallel_mode);
+    fprintf(o, " key:%d v:%d altref:%d errm:%d rt:%d ct:%d fpm:%d", key,
+            version, altref_frame, error_resilient_mode, row_tiles,
+            column_tiles, frame_parallel_mode);
 
     if (key && size > 4) {
       fprintf(o, " cs:%d", parser->color_space());