Fix 5056699: GridLayout should maintain static indices for "gone" views.

GridLayout currently ignores views with visibility="gone" when accounting for rows/columns.
Instead it should count views with visibility="gone" as rows/columns with row/height equal to 0.

This also makes it consistent with other ViewGroups like LinearLayout where "gone" views
don't change order and are still present (but hidden) within a container.

Change-Id: I289d4ee6275d5b49b1e1d79985484216bbf48089