Removes the grid from ash.

ash/shell.h

Index: ash/shell.h
diff --git a/ash/shell.h b/ash/shell.h
index e0c0cae7526975a51e9a6b97a4d0b4dda6f631e3..ff982a1400721af31ad7cfe10a9687f8d8cf0196 100644
--- a/ash/shell.h
+++ b/ash/shell.h
@@ -328,9 +328,6 @@ class ASH_EXPORT Shell : ash::CursorDelegate {
   SystemTrayDelegate* tray_delegate();
   SystemTray* system_tray();
 
-  // Returns the size of the grid.
-  int GetGridSize() const;
-
   static void set_initially_hide_cursor(bool hide) {
     initially_hide_cursor_ = hide;
   }
@@ -383,9 +380,6 @@ class ASH_EXPORT Shell : ash::CursorDelegate {
   void InitLayoutManagersForPrimaryDisplay(
       internal::RootWindowController* root_window_controller);
 
-  // Disables the workspace grid layout.
-  void DisableWorkspaceGridLayout();
-
   // aura::CursorManager::Delegate overrides:
   virtual void SetCursor(gfx::NativeCursor cursor) OVERRIDE;
   virtual void ShowCursor(bool visible) OVERRIDE;