Skip mulitple-dispay tests on win8

ash/drag_drop/drag_drop_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/drag_drop/drag_drop_controller.h"
 
 #include "ash/drag_drop/drag_drop_tracker.h"
 #include "ash/drag_drop/drag_image_view.h"
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
@@ skipping 994 matching lines @@
   gfx::Point window_location_on_destroying() const {
     return window_location_on_destroying_;
   }
 
  public:
   gfx::Point window_location_on_destroying_;
 };
 
 }
 
-#if defined(OS_WIN)
-// Multiple displays are not supported on Windows Ash. http://crbug.com/165962
-#define MAYBE_DragCancelAcrossDisplays DISABLED_DragCancelAcrossDisplays
-#else
-#define MAYBE_DragCancelAcrossDisplays DragCancelAcrossDisplays
-#endif
-
 // Verifies the drag image moves back to the position where drag is started
 // across displays when drag is cancelled.
-TEST_F(DragDropControllerTest, MAYBE_DragCancelAcrossDisplays) {
+TEST_F(DragDropControllerTest, DragCancelAcrossDisplays) {
+  if (!SupportsMultipleDisplays())
+    return;
+
   UpdateDisplay("400x400,400x400");
   Shell::RootWindowList root_windows =
       Shell::GetInstance()->GetAllRootWindows();
   for (Shell::RootWindowList::iterator iter = root_windows.begin();
        iter != root_windows.end(); ++iter) {
     aura::client::SetDragDropClient(*iter, drag_drop_controller_.get());
   }
 
   ui::OSExchangeData data;
   data.SetString(UTF8ToUTF16("I am being dragged"));
@@ skipping 68 matching lines @@
     EXPECT_EQ("405,405", observer.window_location_on_destroying().ToString());
   }
   for (Shell::RootWindowList::iterator iter = root_windows.begin();
        iter != root_windows.end(); ++iter) {
     aura::client::SetDragDropClient(*iter, NULL);
   }
 }
 
 }  // namespace test
 }  // namespace aura