collect windows from mru_list in workspace_controller.

ash/shelf/shelf_layout_manager_unittest.cc

 // Copyright (c) 2012 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/shelf/shelf_layout_manager.h"
 
 #include "ash/accelerators/accelerator_controller.h"
 #include "ash/accelerators/accelerator_table.h"
 #include "ash/focus_cycler.h"
 #include "ash/public/cpp/config.h"
@@ skipping 1541 matching lines @@
   EXPECT_EQ(SHELF_AUTO_HIDE, shelf->GetVisibilityState());
   wm::GetWindowState(window_two)->Restore();
 
   // With the flag off, shelf no longer auto-hides.
   widget_one->Activate();
   EXPECT_EQ(SHELF_VISIBLE, shelf->GetVisibilityState());
   wm::GetWindowState(window_two)
       ->set_autohide_shelf_when_maximized_or_fullscreen(false);
   widget_two->Activate();
   EXPECT_EQ(SHELF_VISIBLE, shelf->GetVisibilityState());
+
+  wm::GetWindowState(window_two)
+      ->set_autohide_shelf_when_maximized_or_fullscreen(true);
+  window_two->SetProperty(aura::client::kAlwaysOnTopKey, true);

[oshima, 2017/06/30 00:04:08]

please test if the window is in the always on container.

[Muyuan, 2017/06/30 00:28:23]

Done.

+  widget_two->Maximize();
+  EXPECT_EQ(SHELF_AUTO_HIDE, shelf->GetVisibilityState());

[oshima, 2017/06/30 00:04:08]

Can you also check if the workspace state is in maximized?

[Muyuan, 2017/06/30 00:28:23]

Done.

 }
 
 TEST_F(ShelfLayoutManagerTest, ShelfFlickerOnTrayActivation) {
   // TODO: investigate failure in mash, http://crbug.com/695686.
   if (Shell::GetAshConfig() == Config::MASH)
     return;
 
   Shelf* shelf = GetPrimaryShelf();
 
   // Create a visible window so auto-hide behavior is enforced.
@@ skipping 303 matching lines @@
   // Open keyboard in sticky mode.
   kb_controller->ShowKeyboard(true);
   layout_manager->OnKeyboardBoundsChanging(keyboard_bounds());
 
   // Work area should be changed.
   EXPECT_NE(orig_work_area,
             display::Screen::GetScreen()->GetPrimaryDisplay().work_area());
 }
 
 }  // namespace ash