Eliminate ash::internal namespace

ash/wm/maximize_mode/maximize_mode_window_state.h

 // Copyright 2014 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_MAXIMIZE_MODE_MAXIMIZE_MODE_WINDOW_STATE_H_
 #define ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_WINDOW_STATE_H_
 
 #include "ash/wm/window_state.h"
 
 namespace ash {
-namespace internal {
 class MaximizeModeWindowManager;
 
 // The MaximizeModeWindowState implementation which reduces all possible window
 // states to minimized and maximized. If a window cannot be maximized it will be
 // set to normal. If a window cannot fill the entire workspace it will be
 // centered within the workspace.
 class MaximizeModeWindowState : public wm::WindowState::State {
  public:
   // Called when the window position might need to be updated.
   static void UpdateWindowPosition(wm::WindowState* window_state,
@@ skipping 33 matching lines @@
   // The creator which needs to be informed when this state goes away.
   MaximizeModeWindowManager* creator_;
 
   // The current state type. Due to the nature of this state, this can only be
   // WM_STATE_TYPE{NORMAL, MINIMIZED, MAXIMIZED}.
   wm::WindowStateType current_state_type_;
 
   DISALLOW_COPY_AND_ASSIGN(MaximizeModeWindowState);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_WINDOW_STATE_H_