Skip mulitple-dispay tests on win8

ash/drag_drop/drag_drop_controller_unittest.cc

Index: ash/drag_drop/drag_drop_controller_unittest.cc
diff --git a/ash/drag_drop/drag_drop_controller_unittest.cc b/ash/drag_drop/drag_drop_controller_unittest.cc
index ea25e3822119f230e10d16e1bac9c5f070b69cea..7ca79ea0a05dec30215c88d8acf46209d94222af 100644
--- a/ash/drag_drop/drag_drop_controller_unittest.cc
+++ b/ash/drag_drop/drag_drop_controller_unittest.cc
@@ -1012,16 +1012,12 @@ class DragImageWindowObserver : public aura::WindowObserver {
 
 }
 
-#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();