tree da95d6d64d1a49dd5607167e61c6fb12d8c3e0db
parent a8dc1e2e23531806de8a1a92b38db394886aa61b
author chiyotsai <chiyotsai@google.com> 1562972961 -0700
committer Chi Yo Tsai <chiyotsai@google.com> 1563224235 +0000

Remove mi_grid_visible

(prev)?_mi_grid_base and (prev)?_mi_grid_visible both point to the same
pointer in the codebase, so only one is needed.

Change-Id: I70e73a7738a893df6b694fd0c40ca22602fe56f9