Standardize usage of virtual/override/final specifiers.

ash/wm/overview/window_selector_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <algorithm>
 
 #include "ash/accessibility_delegate.h"
 #include "ash/drag_drop/drag_drop_controller.h"
 #include "ash/root_window_controller.h"
 #include "ash/screen_util.h"
@@ skipping 38 matching lines @@
 #include "ui/views/widget/widget_delegate.h"
 #include "ui/wm/core/window_util.h"
 #include "ui/wm/public/activation_delegate.h"
 
 namespace ash {
 namespace {
 
 class NonActivatableActivationDelegate
     : public aura::client::ActivationDelegate {
  public:
-  virtual bool ShouldActivate() const override {
-    return false;
-  }
+  bool ShouldActivate() const override { return false; }
 };
 
 void CancelDrag(DragDropController* controller, bool* canceled) {
   if (controller->IsDragDropInProgress()) {
     *canceled = true;
     controller->DragCancel();
   }
 }
 
 }  // namespace
 
 class WindowSelectorTest : public test::AshTestBase {
  public:
   WindowSelectorTest() {}
-  virtual ~WindowSelectorTest() {}
+  ~WindowSelectorTest() override {}
 
-  virtual void SetUp() override {
+  void SetUp() override {
     test::AshTestBase::SetUp();
     ASSERT_TRUE(test::TestShelfDelegate::instance());
 
     shelf_view_test_.reset(new test::ShelfViewTestAPI(
         test::ShelfTestAPI(Shelf::ForPrimaryDisplay()).shelf_view()));
     shelf_view_test_->SetAnimationDuration(1);
   }
 
   aura::Window* CreateWindow(const gfx::Rect& bounds) {
     return CreateTestWindowInShellWithDelegate(&delegate_, -1, bounds);
@@ skipping 1174 matching lines @@
   // Switch to overview mode.
   ToggleOverview();
   ASSERT_TRUE(IsSelecting());
 
   // Tap should now exit overview mode.
   generator.GestureTapAt(point_in_background_page);
   EXPECT_FALSE(IsSelecting());
 }
 
 }  // namespace ash