cros: Remove some OS platform ifdefs from ash

ash/system/overview/overview_button_tray_unittest.cc

 // Copyright 2014 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/system/overview/overview_button_tray.h"
 
 #include "ash/common/login_status.h"
 #include "ash/common/system/status_area_widget.h"
 #include "ash/common/test/test_session_state_delegate.h"
 #include "ash/common/wm/maximize_mode/maximize_mode_controller.h"
@@ skipping 194 matching lines @@
   EXPECT_TRUE(WmShell::Get()->window_selector_controller()->IsSelecting());
   EXPECT_TRUE(GetTray()->is_active());
 
   EXPECT_TRUE(WmShell::Get()->window_selector_controller()->ToggleOverview());
   EXPECT_FALSE(WmShell::Get()->window_selector_controller()->IsSelecting());
   EXPECT_FALSE(GetTray()->is_active());
 }
 
 // Test that when a hide animation is aborted via deletion, that the
 // OverviewButton is still hidden.
-#if defined(OS_WIN) && !defined(USE_ASH)
-// TODO(msw): Broken on Windows. http://crbug.com/584038
-#define MAYBE_HideAnimationAlwaysCompletes DISABLED_HideAnimationAlwaysCompletes
-#else
-#define MAYBE_HideAnimationAlwaysCompletes HideAnimationAlwaysCompletes
-#endif
-TEST_F(OverviewButtonTrayTest, MAYBE_HideAnimationAlwaysCompletes) {
+TEST_F(OverviewButtonTrayTest, HideAnimationAlwaysCompletes) {
   WmShell::Get()->maximize_mode_controller()->EnableMaximizeModeWindowManager(
       true);
 
   // Long duration for hide animation, to allow it to be interrupted.
   std::unique_ptr<ui::ScopedAnimationDurationScaleMode> hide_duration(
       new ui::ScopedAnimationDurationScaleMode(
           ui::ScopedAnimationDurationScaleMode::SLOW_DURATION));
   GetTray()->SetVisible(false);
 
   // ScreenRotationAnimator copies the current layers, and deletes them upon
@@ skipping 25 matching lines @@
   ASSERT_TRUE(WmShell::Get()->IsSystemModalWindowOpen());
   WmShell::Get()->maximize_mode_controller()->EnableMaximizeModeWindowManager(
       true);
   EXPECT_TRUE(GetTray()->visible());
   WmShell::Get()->maximize_mode_controller()->EnableMaximizeModeWindowManager(
       false);
   EXPECT_FALSE(GetTray()->visible());
 }
 
 }  // namespace ash