Makes the maximize/restore button handling

ash/shell.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/shell.h"
 
 #include <algorithm>
 
 #include "ash/app_list/app_list.h"
 #include "ash/ash_switches.h"
@@ skipping 610 matching lines @@
 }
 
 void Shell::AddShellObserver(ShellObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void Shell::RemoveShellObserver(ShellObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
+int Shell::GetGridSize() const {
+  return workspace_controller_->workspace_manager()->grid_size();
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Shell, private:
 
 void Shell::InitLayoutManagers() {
   DCHECK(root_window_layout_);
   DCHECK(status_widget_);
 
   internal::ShelfLayoutManager* shelf_layout_manager =
       new internal::ShelfLayoutManager(launcher_->widget(), status_widget_);
   GetContainer(internal::kShellWindowId_LauncherContainer)->
@@ skipping 18 matching lines @@
   // Create the desktop background image.
   SetDesktopBackgroundMode(BACKGROUND_IMAGE);
 }
 
 void Shell::DisableWorkspaceGridLayout() {
   if (workspace_controller_.get())
     workspace_controller_->workspace_manager()->set_grid_size(0);
 }
 
 }  // namespace ash