Enable extended desktop by default.

ash/screen_ash_unittest.cc

Index: ash/screen_ash_unittest.cc
diff --git a/ash/screen_ash_unittest.cc b/ash/screen_ash_unittest.cc
index 6bb3b72b2cc21ad1c2c5655a568fd77ba596d602..36ab21cef0da41310509d12be57ac35c67bb33e2 100644
--- a/ash/screen_ash_unittest.cc
+++ b/ash/screen_ash_unittest.cc
@@ -16,24 +16,8 @@
 
 namespace ash {
 namespace test {
-class ScreenAshTest : public test::AshTestBase {
- public:
-  ScreenAshTest() {}
-  virtual ~ScreenAshTest() {}
 
-  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(ScreenAshTest);
-};
+typedef test::AshTestBase ScreenAshTest;
 
 #if !defined(OS_WIN)
 TEST_F(ScreenAshTest, Bounds) {