Removes the grid from ash.

ash/shell.cc

Index: ash/shell.cc
diff --git a/ash/shell.cc b/ash/shell.cc
index f43a1e35d5505160205a72f4878a2466f5d49e9b..2f5ada2f641ef4f1df86c11482913a2e3a593221 100644
--- a/ash/shell.cc
+++ b/ash/shell.cc
@@ -656,11 +656,6 @@ SystemTray* Shell::system_tray() {
   return status_area_widget_->system_tray();
 }
 
-int Shell::GetGridSize() const {
-  return
-      GetPrimaryRootWindowController()->workspace_controller()->GetGridSize();
-}
-
 void Shell::InitRootWindowForSecondaryDisplay(aura::RootWindow* root) {
   root->set_focus_manager(focus_manager_.get());
   internal::RootWindowController* controller =
@@ -753,14 +748,6 @@ void Shell::InitLayoutManagersForPrimaryDisplay(
   panel_container->SetLayoutManager(panel_layout_manager_);
 }
 
-// TODO: this is only used in tests, move with test.
-void Shell::DisableWorkspaceGridLayout() {
-  RootWindowControllerList controllers = GetAllRootWindowControllers();
-  for (RootWindowControllerList::iterator iter = controllers.begin();
-       iter != controllers.end(); ++iter)
-    (*iter)->workspace_controller()->SetGridSize(0);
-}
-
 void Shell::SetCursor(gfx::NativeCursor cursor) {
   RootWindowList root_windows = GetAllRootWindows();
   for (RootWindowList::iterator iter = root_windows.begin();