Standardize usage of virtual/override/final specifiers.

ash/wm/workspace/multi_window_resize_controller_unittest.cc

Index: ash/wm/workspace/multi_window_resize_controller_unittest.cc
diff --git a/ash/wm/workspace/multi_window_resize_controller_unittest.cc b/ash/wm/workspace/multi_window_resize_controller_unittest.cc
index f686515d8296def93138aeff8f8f9b01891eeee9..ada064f721eb8af6dae02b2c24f53ed5021888e1 100644
--- a/ash/wm/workspace/multi_window_resize_controller_unittest.cc
+++ b/ash/wm/workspace/multi_window_resize_controller_unittest.cc
@@ -23,9 +23,9 @@ namespace ash {
 class MultiWindowResizeControllerTest : public test::AshTestBase {
  public:
   MultiWindowResizeControllerTest() : resize_controller_(NULL) {}
-  virtual ~MultiWindowResizeControllerTest() {}
+  ~MultiWindowResizeControllerTest() override {}
 
-  virtual void SetUp() override {
+  void SetUp() override {
     test::AshTestBase::SetUp();
     WorkspaceController* wc =
         test::ShellTestApi(Shell::GetInstance()).workspace_controller();