[mus+ash] Removes WmWindow from ash/wm/mru_window_tracker and overview mode

ash/wm/maximize_mode/maximize_mode_window_manager_unittest.cc

Index: ash/wm/maximize_mode/maximize_mode_window_manager_unittest.cc
diff --git a/ash/wm/maximize_mode/maximize_mode_window_manager_unittest.cc b/ash/wm/maximize_mode/maximize_mode_window_manager_unittest.cc
index 1a059039ed93c58c2b4f09108384091f48fc6395..d1ad7741e81fcead2461c7dbee91d21342c4ce18 100644
--- a/ash/wm/maximize_mode/maximize_mode_window_manager_unittest.cc
+++ b/ash/wm/maximize_mode/maximize_mode_window_manager_unittest.cc
@@ -770,8 +770,8 @@ TEST_F(MaximizeModeWindowManagerTest, ModeChangeKeepsMRUOrder) {
 
   // The windows should be in the reverse order of creation in the MRU list.
   {
-    aura::Window::Windows windows = WmWindow::ToAuraWindows(
-        Shell::Get()->mru_window_tracker()->BuildMruWindowList());
+    aura::Window::Windows windows =
+        Shell::Get()->mru_window_tracker()->BuildMruWindowList();
 
     EXPECT_EQ(w1.get(), windows[4]);
     EXPECT_EQ(w2.get(), windows[3]);
@@ -785,8 +785,8 @@ TEST_F(MaximizeModeWindowManagerTest, ModeChangeKeepsMRUOrder) {
   ASSERT_TRUE(manager);
   EXPECT_EQ(5, manager->GetNumberOfManagedWindows());
   {
-    aura::Window::Windows windows = WmWindow::ToAuraWindows(
-        Shell::Get()->mru_window_tracker()->BuildMruWindowList());
+    aura::Window::Windows windows =
+        Shell::Get()->mru_window_tracker()->BuildMruWindowList();
     // We do not test maximization here again since that was done already.
     EXPECT_EQ(w1.get(), windows[4]);
     EXPECT_EQ(w2.get(), windows[3]);
@@ -798,8 +798,8 @@ TEST_F(MaximizeModeWindowManagerTest, ModeChangeKeepsMRUOrder) {
   // Destroying should still keep the order.
   DestroyMaximizeModeWindowManager();
   {
-    aura::Window::Windows windows = WmWindow::ToAuraWindows(
-        Shell::Get()->mru_window_tracker()->BuildMruWindowList());
+    aura::Window::Windows windows =
+        Shell::Get()->mru_window_tracker()->BuildMruWindowList();
     // We do not test maximization here again since that was done already.
     EXPECT_EQ(w1.get(), windows[4]);
     EXPECT_EQ(w2.get(), windows[3]);