ash: Update app list UI to match latest crwm.

ash/app_list/app_list_model_view.h

Index: ash/app_list/app_list_model_view.h
diff --git a/ash/app_list/app_list_model_view.h b/ash/app_list/app_list_model_view.h
index af856f4c7fa93fa41954a729dc72242f55e80dff..a5273f3083bc7e13b2d88e8a7ac904b796fb579b 100644
--- a/ash/app_list/app_list_model_view.h
+++ b/ash/app_list/app_list_model_view.h
@@ -37,7 +37,6 @@ class AppListModelView : public views::View,
 
   AppListItemView* GetItemViewAtIndex(int index);
   void SetSelectedItemByIndex(int index);
-  int SetTileIconSizeAndGetMaxWidth(int icon_dimension);
 
   // Overridden from views::View:
   virtual void Layout() OVERRIDE;
@@ -54,7 +53,7 @@ class AppListModelView : public views::View,
   views::ButtonListener* listener_;
 
   int selected_item_index_;
-  int items_per_col_;
+  int items_per_row_;
 
   DISALLOW_COPY_AND_ASSIGN(AppListModelView);
 };