cros: Remove some OS platform ifdefs from ash

ash/magnifier/magnification_controller_unittest.cc

Index: ash/magnifier/magnification_controller_unittest.cc
diff --git a/ash/magnifier/magnification_controller_unittest.cc b/ash/magnifier/magnification_controller_unittest.cc
index 183c25528a527fd89a786ee9ac5264291e5d7bba..8f5e7c2cbd28092c5f541460ca0884aae7d1e8bb 100644
--- a/ash/magnifier/magnification_controller_unittest.cc
+++ b/ash/magnifier/magnification_controller_unittest.cc
@@ -65,15 +65,6 @@ class MagnificationControllerTest : public test::AshTestBase {
     AshTestBase::SetUp();
     UpdateDisplay(base::StringPrintf("%dx%d", kRootWidth, kRootHeight));
 
-#if defined(OS_WIN)
-    // RootWindow and Display can't resize on Windows Ash.
-    // http://crbug.com/165962
-    aura::Window* root = GetRootWindow();
-    gfx::Rect root_bounds(root->bounds());
-    EXPECT_EQ(kRootHeight, root_bounds.height());
-    EXPECT_EQ(kRootWidth, root_bounds.width());
-#endif
-
     GetMagnificationController()->DisableMoveMagnifierDelayForTesting();
   }