Adds the option of aligning the launcher to the left or right. There

ash/launcher/launcher_alignment_menu.h

Index: ash/launcher/launcher_alignment_menu.h
diff --git a/ash/launcher/launcher_alignment_menu.h b/ash/launcher/launcher_alignment_menu.h
new file mode 100644
index 0000000000000000000000000000000000000000..0c3d23fb1ae78930aa834035b9f89f7de86e2761
--- /dev/null
+++ b/ash/launcher/launcher_alignment_menu.h
@@ -0,0 +1,43 @@
+// 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.
+
+#ifndef ASH_WM_LAUNCHER_LAUNCHER_ALIGNMENT_MENU_H_
+#define ASH_WM_LAUNCHER_LAUNCHER_ALIGNMENT_MENU_H_
+#pragma once
+
+#include "ash/ash_export.h"
+#include "base/basictypes.h"
+#include "ui/base/models/simple_menu_model.h"
+
+namespace ash {
+
+// Submenu for choosing the alignment of the launcher.
+class ASH_EXPORT LauncherAlignmentMenu : public ui::SimpleMenuModel,
+                                         public ui::SimpleMenuModel::Delegate {
+ public:
+  LauncherAlignmentMenu();
+  virtual ~LauncherAlignmentMenu();
+
+  // ui::SimpleMenuModel::Delegate overrides:
+  virtual bool IsCommandIdChecked(int command_id) const OVERRIDE;
+  virtual bool IsCommandIdEnabled(int command_id) const OVERRIDE;
+  virtual bool GetAcceleratorForCommandId(
+      int command_id,
+      ui::Accelerator* accelerator) OVERRIDE;
+  virtual void ExecuteCommand(int command_id) OVERRIDE;
+
+ private:
+  enum MenuItem {
+    // Offset so as not to interfere with other menus.
+    MENU_ALIGN_LEFT = 500,
+    MENU_ALIGN_RIGHT,
+    MENU_ALIGN_BOTTOM,
+  };
+
+  DISALLOW_COPY_AND_ASSIGN(LauncherAlignmentMenu);
+};
+
+}  // namespace ash
+
+#endif  // ASH_WM_LAUNCHER_LAUNCHER_ALIGNMENT_MENU_H_