Skip mulitple-dispay tests on win8

ash/display/root_window_transformers_unittest.cc

 // Copyright 2013 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/display/root_window_transformers.h"
 
 #include "ash/display/display_controller.h"
 #include "ash/display/display_info.h"
 #include "ash/display/display_manager.h"
 #include "ash/launcher/launcher.h"
@@ skipping 102 matching lines @@
 
 float GetStoredUIScale(int64 id) {
   return Shell::GetInstance()->display_manager()->GetDisplayInfo(id).ui_scale();
 }
 
 }  // namespace
 
 typedef test::AshTestBase AshRootWindowTransformerTest;
 
 #if defined(OS_WIN)
-// On Win8 bots, the host window can't be resized and
-// SetTransform updates the window using the orignal host window
-// size.
+// TODO(scottmg): RootWindow doesn't get resized on Windows
+// Ash. http://crbug.com/247916.
 #define MAYBE_RotateAndMagnify DISABLED_RotateAndMagniy
-#define MAYBE_ScaleAndMagnify DISABLED_ScaleAndMagnify
 #define MAYBE_TouchScaleAndMagnify DISABLED_TouchScaleAndMagnify
 #define MAYBE_ConvertHostToRootCoords DISABLED_ConvertHostToRootCoords
 #else
 #define MAYBE_RotateAndMagnify RotateAndMagniy
-#define MAYBE_ScaleAndMagnify ScaleAndMagnify
 #define MAYBE_TouchScaleAndMagnify TouchScaleAndMagnify
 #define MAYBE_ConvertHostToRootCoords ConvertHostToRootCoords
 #endif
 
 TEST_F(AshRootWindowTransformerTest, MAYBE_RotateAndMagnify) {
   DisplayController* display_controller =
       Shell::GetInstance()->display_controller();
   MagnificationController* magnifier =
       Shell::GetInstance()->magnification_controller();
   internal::DisplayManager* display_manager =
@@ skipping 79 matching lines @@
             ScreenAsh::GetSecondaryDisplay().bounds().ToString());
   generator1.MoveMouseToInHost(39, 59);
   EXPECT_EQ("70,120", event_handler.GetLocationAndReset());
   EXPECT_EQ(gfx::Display::ROTATE_180, GetStoredRotation(display1.id()));
   EXPECT_EQ(gfx::Display::ROTATE_270, GetStoredRotation(display2_id));
   magnifier->SetEnabled(false);
 
   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
 }
 
-TEST_F(AshRootWindowTransformerTest, MAYBE_ScaleAndMagnify) {
+TEST_F(AshRootWindowTransformerTest, ScaleAndMagnify) {
+  if (!SupportsMultipleDisplays())
+    return;
+
   TestEventHandler event_handler;
   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
 
   UpdateDisplay("600x400*2@1.5,500x300");
 
   gfx::Display display1 = Shell::GetScreen()->GetPrimaryDisplay();
   gfx::Display::SetInternalDisplayId(display1.id());
   gfx::Display display2 = ScreenAsh::GetSecondaryDisplay();
   Shell::RootWindowList root_windows = Shell::GetAllRootWindows();
   MagnificationController* magnifier =
@@ skipping 146 matching lines @@
   EXPECT_EQ("159,99", event_handler.GetLocationAndReset());
 
   magnifier->SetEnabled(false);
   EXPECT_FLOAT_EQ(1.0f, magnifier->GetScale());
 
   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
 }
 
 }  // namespace test
 }  // namespace ash