Eliminate ash::internal namespace

ash/shell_window_ids.h

 // 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_SHELL_WINDOW_IDS_H_
 #define ASH_SHELL_WINDOW_IDS_H_
 
 // Declarations of ids of special shell windows.
 
 namespace ash {
 
-// TODO: we're using this in random places outside of ash, it shouldn't be in
-// internal.
-namespace internal {
-
 // A higher-level container that holds all of the containers stacked below
 // kShellWindowId_LockScreenContainer.  Only used by PowerButtonController for
 // animating lower-level containers.
 const int kShellWindowId_NonLockScreenContainersContainer = 0;
 
 // A higher-level container that holds containers that hold lock-screen
 // windows.  Only used by PowerButtonController for animating lower-level
 // containers.
 const int kShellWindowId_LockScreenContainersContainer = 1;
 
@@ skipping 77 matching lines @@
 // ensure that the virtual keyboard is stacked above most containers but below
 // the mouse cursor and the power off animation.
 const int kShellWindowId_VirtualKeyboardParentContainer = 24;
 
 // The container for mouse cursor.
 const int kShellWindowId_MouseCursorContainer = 25;
 
 // The topmost container, used for power off animation.
 const int kShellWindowId_PowerButtonAnimationContainer = 26;
 
-}  // namespace internal
-
 }  // namespace ash
 
 
 #endif  // ASH_SHELL_WINDOW_IDS_H_