Moves mash/wm into ash/mus

ash/mus/fill_layout.h

 // Copyright 2016 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 MASH_WM_FILL_LAYOUT_H_
-#define MASH_WM_FILL_LAYOUT_H_
+#ifndef ASH_MUS_FILL_LAYOUT_H_
+#define ASH_MUS_FILL_LAYOUT_H_
 
+#include "ash/mus/layout_manager.h"
 #include "base/macros.h"
-#include "mash/wm/layout_manager.h"
 
-namespace mash {
-namespace wm {
+namespace ash {
+namespace mus {
 
 // Lays out windows to fill their containers.
 class FillLayout : public LayoutManager {
  public:
-  explicit FillLayout(mus::Window* owner);
+  explicit FillLayout(::mus::Window* owner);
   ~FillLayout() override;
 
  private:
   // Overridden from LayoutManager:
-  void LayoutWindow(mus::Window* window) override;
+  void LayoutWindow(::mus::Window* window) override;
 
   DISALLOW_COPY_AND_ASSIGN(FillLayout);
 };
 
-}  // namespace wm
-}  // namespace mash
+}  // namespace mus
+}  // namespace ash
 
-#endif  // MASH_WM_FILL_LAYOUT_H_
+#endif  // ASH_MUS_FILL_LAYOUT_H_