Standardize usage of virtual/override/final specifiers.

ash/wm/window_state_unittest.cc

Index: ash/wm/window_state_unittest.cc
diff --git a/ash/wm/window_state_unittest.cc b/ash/wm/window_state_unittest.cc
index 79f765a679bb4e5dcc30e22e47b460fa4eb19a28..d816cf7d11ba78e0f66a6fd659b7367f98e785fa 100644
--- a/ash/wm/window_state_unittest.cc
+++ b/ash/wm/window_state_unittest.cc
@@ -21,26 +21,22 @@ class AlwaysMaximizeTestState : public WindowState::State {
  public:
   explicit AlwaysMaximizeTestState(WindowStateType initial_state_type)
       : state_type_(initial_state_type) {}
-  virtual ~AlwaysMaximizeTestState() {}
+  ~AlwaysMaximizeTestState() override {}
 
   // WindowState::State overrides:
-  virtual void OnWMEvent(WindowState* window_state,
-                         const WMEvent* event) override {
+  void OnWMEvent(WindowState* window_state, const WMEvent* event) override {
     // We don't do anything here.
   }
-  virtual WindowStateType GetType() const override {
-    return state_type_;
-  }
-  virtual void AttachState(
-      WindowState* window_state,
-      WindowState::State* previous_state) override {
+  WindowStateType GetType() const override { return state_type_; }
+  void AttachState(WindowState* window_state,
+                   WindowState::State* previous_state) override {
     // We always maximize.
     if (state_type_ != WINDOW_STATE_TYPE_MAXIMIZED) {
       window_state->Maximize();
       state_type_ = WINDOW_STATE_TYPE_MAXIMIZED;
     }
   }
-  virtual void DetachState(WindowState* window_state) override {}
+  void DetachState(WindowState* window_state) override {}
 
  private:
   WindowStateType state_type_;