Make experimental app launcher show 4 rows of apps.

ui/app_list/app_list_constants.cc

Index: ui/app_list/app_list_constants.cc
diff --git a/ui/app_list/app_list_constants.cc b/ui/app_list/app_list_constants.cc
index 08559ad636c05e93da17d7678537b4797f274330..527b0d6e590b20611504290701c4c64e5c21a1fa 100644
--- a/ui/app_list/app_list_constants.cc
+++ b/ui/app_list/app_list_constants.cc
@@ -67,9 +67,13 @@ const int kGridIconDimension = 48;
 const int kListIconSize = 32;
 const int kTileIconSize = 48;
 
+// Preferred number of columns and rows in the centered app list apps grid.
+const int kCenteredPreferredCols = 6;
+const int kCenteredPreferredRows = 3;
+
 // Preferred number of columns and rows in the experimental app list apps grid.
 const int kExperimentalPreferredCols = 6;
-const int kExperimentalPreferredRows = 3;
+const int kExperimentalPreferredRows = 4;
 
 // Radius of the circle, in which if entered, show re-order preview.
 const int kReorderDroppingCircleRadius = 35;