cros: Remove some OS platform ifdefs from ash

ash/root_window_controller_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/root_window_controller.h"
 
 #include <memory>
 
 #include "ash/aura/wm_window_aura.h"
 #include "ash/common/material_design/material_design_controller.h"
@@ skipping 1218 matching lines @@
   generator.MoveMouseTo(right, bottom);
   generator.ClickLeftButton();
   EXPECT_EQ(2, menu_handler.num_mouse_events());
 
   // Cleanup to ensure that the test windows are destroyed before their
   // delegates.
   normal.reset();
   menu.reset();
 }
 
-// Resolution in UpdateDisplay is not being respected on Windows 8.
-#if defined(OS_WIN)
-#define MAYBE_DisplayRotation DISABLED_DisplayRotation
-#else
-#define MAYBE_DisplayRotation DisplayRotation
-#endif
-
 // Tests that the virtual keyboard correctly resizes with a change to display
 // orientation. See crbug/417612.
-TEST_F(VirtualKeyboardRootWindowControllerTest, MAYBE_DisplayRotation) {
+TEST_F(VirtualKeyboardRootWindowControllerTest, DisplayRotation) {
   UpdateDisplay("800x600");
   aura::Window* root_window = Shell::GetPrimaryRootWindow();
   aura::Window* keyboard_container =
       Shell::GetContainer(root_window, kShellWindowId_VirtualKeyboardContainer);
   ASSERT_TRUE(keyboard_container);
   keyboard::KeyboardController* keyboard_controller =
       keyboard::KeyboardController::GetInstance();
   keyboard_controller->ShowKeyboard(false);
   keyboard_controller->ui()->GetKeyboardWindow()->SetBounds(
       gfx::Rect(0, 400, 800, 200));
   EXPECT_EQ("0,400 800x200", keyboard_container->bounds().ToString());
 
   UpdateDisplay("600x800");
   EXPECT_EQ("0,600 600x200", keyboard_container->bounds().ToString());
 }
 
 }  // namespace test
 }  // namespace ash