Standardize usage of virtual/override/final specifiers.

ash/wm/resize_shadow_and_cursor_unittest.cc

Index: ash/wm/resize_shadow_and_cursor_unittest.cc
diff --git a/ash/wm/resize_shadow_and_cursor_unittest.cc b/ash/wm/resize_shadow_and_cursor_unittest.cc
index 285cbf9e7e2cd83ee06b667c7454929a212ca32c..e3689b345c6c143030f3ef0f83347b06ff59d36f 100644
--- a/ash/wm/resize_shadow_and_cursor_unittest.cc
+++ b/ash/wm/resize_shadow_and_cursor_unittest.cc
@@ -27,19 +27,13 @@ namespace {
 class TestWidgetDelegate : public views::WidgetDelegateView {
  public:
   TestWidgetDelegate() {}
-  virtual ~TestWidgetDelegate() {}
+  ~TestWidgetDelegate() override {}
 
   // views::WidgetDelegateView overrides:
-  virtual bool CanResize() const override {
-    return true;
-  }
-  virtual bool CanMaximize() const override {
-    return true;
-  }
-  virtual bool CanMinimize() const override {
-    return true;
-  }
-  virtual views::NonClientFrameView* CreateNonClientFrameView(
+  bool CanResize() const override { return true; }
+  bool CanMaximize() const override { return true; }
+  bool CanMinimize() const override { return true; }
+  views::NonClientFrameView* CreateNonClientFrameView(
       views::Widget* widget) override {
     return new ash::CustomFrameViewAsh(widget);
   }
@@ -55,10 +49,10 @@ class TestWidgetDelegate : public views::WidgetDelegateView {
 class ResizeShadowAndCursorTest : public AshTestBase {
  public:
   ResizeShadowAndCursorTest() {}
-  virtual ~ResizeShadowAndCursorTest() {}
+  ~ResizeShadowAndCursorTest() override {}
 
   // AshTestBase override:
-  virtual void SetUp() override {
+  void SetUp() override {
     AshTestBase::SetUp();
 
     views::Widget* widget(views::Widget::CreateWindowWithContextAndBounds(