Moves mash/wm into ash/mus

ash/mus/fill_layout.cc

 // 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.
 
-#include "mash/wm/fill_layout.h"
+#include "ash/mus/fill_layout.h"
 
 #include "components/mus/public/cpp/window.h"
 
-namespace mash {
-namespace wm {
+namespace ash {
+namespace mus {
 
-FillLayout::FillLayout(mus::Window* owner) : LayoutManager(owner) {}
+FillLayout::FillLayout(::mus::Window* owner) : LayoutManager(owner) {}
 
 FillLayout::~FillLayout() {}
 
-void FillLayout::LayoutWindow(mus::Window* window) {
+void FillLayout::LayoutWindow(::mus::Window* window) {
   window->SetBounds(gfx::Rect(owner()->bounds().size()));
 }
 
-}  // namespace wm
-}  // namespace mash
+}  // namespace mus
+}  // namespace ash