Copies MruWindowTrackerTest over for mash

ash/mus/wm/mru_window_tracker_unittest.cc

 // Copyright 2013 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 "ash/common/wm/mru_window_tracker.h"
 
-#include "ash/aura/wm_window_aura.h"
 #include "ash/common/shell_window_ids.h"
 #include "ash/common/wm/window_state.h"
-#include "ash/shell.h"
-#include "ash/test/ash_test_base.h"
-#include "ash/wm/window_state_aura.h"
-#include "ash/wm/window_util.h"
-#include "ui/aura/window.h"
+#include "ash/common/wm_shell.h"
+#include "ash/mus/bridge/wm_window_mus.h"
+#include "ash/mus/test/wm_test_base.h"
 #include "ui/base/hit_test.h"
-#include "ui/views/widget/widget.h"
 
 namespace ash {
 
 class MruWindowTrackerTest : public test::AshTestBase {
  public:
   MruWindowTrackerTest() {}
   ~MruWindowTrackerTest() override {}
 
   aura::Window* CreateWindow() {
     return CreateTestWindowInShellWithBounds(gfx::Rect(0, 0, 400, 400));
@@ skipping 70 matching lines @@
   drag_container->AddChild(w1.get());
   EXPECT_TRUE(wm::GetWindowState(w1.get())->is_dragged());
 
   // The dragged window should only be in the list once.
   aura::Window::Windows window_list = WmWindowAura::ToAuraWindows(
       mru_window_tracker()->BuildWindowListIgnoreModal());
   EXPECT_EQ(1, std::count(window_list.begin(), window_list.end(), w1.get()));
 }
 
 }  // namespace ash