Add always on top windows to the alt+tab list

ash/extended_desktop_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/display/display_controller.h"
 #include "ash/display/multi_display_manager.h"
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/wm/window_cycle_controller.h"
 #include "ash/wm/window_util.h"
@@ skipping 198 matching lines @@
   controller->HandleCycleWindow(WindowCycleController::BACKWARD, false);
   EXPECT_TRUE(wm::IsActiveWindow(d2_w1->GetNativeView()));
 
   // Cycle through all windows across root windows.
   views::Widget* d1_w2 = CreateTestWidget(gfx::Rect(10, 200, 100, 100));
   EXPECT_EQ(root_windows[0], d1_w2->GetNativeView()->GetRootWindow());
   views::Widget* d2_w2 = CreateTestWidget(gfx::Rect(800, 200, 100, 100));
   EXPECT_EQ(root_windows[1], d2_w2->GetNativeView()->GetRootWindow());
 
   controller->HandleCycleWindow(WindowCycleController::FORWARD, true);
+  EXPECT_TRUE(wm::IsActiveWindow(d1_w2->GetNativeView()));
+  controller->HandleCycleWindow(WindowCycleController::FORWARD, true);
   EXPECT_TRUE(wm::IsActiveWindow(d2_w1->GetNativeView()));
   controller->HandleCycleWindow(WindowCycleController::FORWARD, true);
-  EXPECT_TRUE(wm::IsActiveWindow(d1_w2->GetNativeView()));
-  controller->HandleCycleWindow(WindowCycleController::FORWARD, true);
   EXPECT_TRUE(wm::IsActiveWindow(d1_w1->GetNativeView()));
   controller->HandleCycleWindow(WindowCycleController::FORWARD, true);
   EXPECT_TRUE(wm::IsActiveWindow(d2_w2->GetNativeView()));
 
   // Backwards
   controller->HandleCycleWindow(WindowCycleController::BACKWARD, true);
   EXPECT_TRUE(wm::IsActiveWindow(d1_w1->GetNativeView()));
   controller->HandleCycleWindow(WindowCycleController::BACKWARD, true);
+  EXPECT_TRUE(wm::IsActiveWindow(d2_w1->GetNativeView()));
+  controller->HandleCycleWindow(WindowCycleController::BACKWARD, true);
   EXPECT_TRUE(wm::IsActiveWindow(d1_w2->GetNativeView()));
   controller->HandleCycleWindow(WindowCycleController::BACKWARD, true);
-  EXPECT_TRUE(wm::IsActiveWindow(d2_w1->GetNativeView()));
-  controller->HandleCycleWindow(WindowCycleController::BACKWARD, true);
   EXPECT_TRUE(wm::IsActiveWindow(d2_w2->GetNativeView()));
 }
 
 TEST_F(ExtendedDesktopTest, GetRootWindowAt) {
   UpdateDisplay("700x500,500x500");
   Shell::GetInstance()->display_controller()->SetSecondaryDisplayLayout(
       internal::DisplayController::LEFT);
   Shell::RootWindowList root_windows = Shell::GetAllRootWindows();
 
   EXPECT_EQ(root_windows[1], Shell::GetRootWindowAt(gfx::Point(-400, 100)));
@@ skipping 243 matching lines @@
   p.SetPoint(0, 0);
   aura::Window::ConvertPointToWindow(root_windows[0], root_windows[1], &p);
   EXPECT_EQ("0,-600", p.ToString());
   p.SetPoint(0, 0);
   aura::Window::ConvertPointToWindow(d1, d2, &p);
   EXPECT_EQ("-10,-610", p.ToString());
 }
 
 }  // namespace internal
 }  // namespace ash