Skip mulitple-dispay tests on win8

ash/wm/workspace/workspace_layout_manager_unittest.cc

Index: ash/wm/workspace/workspace_layout_manager_unittest.cc
diff --git a/ash/wm/workspace/workspace_layout_manager_unittest.cc b/ash/wm/workspace/workspace_layout_manager_unittest.cc
index 9516bdb3259c839dccb286048d131e7066ab3288..30cdf6b098ed0003c3928d08e78c3f7bf868150b 100644
--- a/ash/wm/workspace/workspace_layout_manager_unittest.cc
+++ b/ash/wm/workspace/workspace_layout_manager_unittest.cc
@@ -24,18 +24,10 @@ namespace {
 
 typedef test::AshTestBase WorkspaceLayoutManagerTest;
 
-// Multi root doesn't work on Win8/metro. crbug.com/240628.
-#if defined(OS_WIN) && defined(USE_AURA)
-#define MAYBE_RestoreFromMinimizeKeepsRestore \
-  DISABLED_RestoreFromMinimizeKeepsRestore
-#else
-#define MAYBE_RestoreFromMinimizeKeepsRestore RestoreFromMinimizeKeepsRestore
-#endif
-
 // Verifies that a window containing a restore coordinate will be restored to
 // to the size prior to minimize, keeping the restore rectangle in tact (if
 // there is one).
-TEST_F(WorkspaceLayoutManagerTest, MAYBE_RestoreFromMinimizeKeepsRestore) {
+TEST_F(WorkspaceLayoutManagerTest, RestoreFromMinimizeKeepsRestore) {
   scoped_ptr<aura::Window> window(
       CreateTestWindowInShellWithBounds(gfx::Rect(1, 2, 3, 4)));
   gfx::Rect bounds(10, 15, 25, 35);
@@ -47,6 +39,9 @@ TEST_F(WorkspaceLayoutManagerTest, MAYBE_RestoreFromMinimizeKeepsRestore) {
   EXPECT_EQ("0,0 100x100", GetRestoreBoundsInScreen(window.get())->ToString());
   EXPECT_EQ("10,15 25x35", window.get()->bounds().ToString());
 
+  if (!SupportsMultipleDisplays())
+    return;
+
   UpdateDisplay("400x300,500x400");
   window->SetBoundsInScreen(gfx::Rect(600, 0, 100, 100),
                             ScreenAsh::GetSecondaryDisplay());