Enable extended desktop by default.

ash/display/display_controller_unittest.cc

Index: ash/display/display_controller_unittest.cc
diff --git a/ash/display/display_controller_unittest.cc b/ash/display/display_controller_unittest.cc
index 48d2babf7b64ab88f9c4af9c7a194db452eea269..73ceaa06dd412d2f74a3a0b455fe8bc62869fc64 100644
--- a/ash/display/display_controller_unittest.cc
+++ b/ash/display/display_controller_unittest.cc
@@ -29,24 +29,7 @@ gfx::Display GetSecondaryDisplay() {
 
 }  // namespace
 
-class DisplayControllerTest : public test::AshTestBase {
- public:
-  DisplayControllerTest() {}
-  virtual ~DisplayControllerTest() {}
-
-  virtual void SetUp() OVERRIDE {
-    internal::DisplayController::SetExtendedDesktopEnabled(true);
-    AshTestBase::SetUp();
-  }
-
-  virtual void TearDown() OVERRIDE {
-    AshTestBase::TearDown();
-    internal::DisplayController::SetExtendedDesktopEnabled(false);
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(DisplayControllerTest);
-};
+typedef test::AshTestBase DisplayControllerTest;
 
 #if defined(OS_WIN)
 // TOD(oshima): Windows creates a window with smaller client area.