Standardize usage of virtual/override/final in ui/

ui/app_list/app_list_model_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 "ui/app_list/app_list_model.h"
 
 #include <map>
 #include <string>
 
 #include "base/command_line.h"
@@ skipping 11 matching lines @@
 namespace {
 
 class TestObserver : public AppListModelObserver {
  public:
   TestObserver()
       : status_changed_count_(0),
         items_added_(0),
         items_removed_(0),
         items_updated_(0) {
   }
-  virtual ~TestObserver() {
-  }
+  ~TestObserver() override {}
 
   // AppListModelObserver
-  virtual void OnAppListModelStatusChanged() override {
-    ++status_changed_count_;
-  }
+  void OnAppListModelStatusChanged() override { ++status_changed_count_; }
 
-  virtual void OnAppListItemAdded(AppListItem* item) override {
-    items_added_++;
-  }
+  void OnAppListItemAdded(AppListItem* item) override { items_added_++; }
 
-  virtual void OnAppListItemWillBeDeleted(AppListItem* item) override {
+  void OnAppListItemWillBeDeleted(AppListItem* item) override {
     items_removed_++;
   }
 
-  virtual void OnAppListItemUpdated(AppListItem* item) override {
-    items_updated_++;
-  }
+  void OnAppListItemUpdated(AppListItem* item) override { items_updated_++; }
 
   int status_changed_count() const { return status_changed_count_; }
   size_t items_added() { return items_added_; }
   size_t items_removed() { return items_removed_; }
   size_t items_updated() { return items_updated_; }
 
   void ResetCounts() {
     status_changed_count_ = 0;
     items_added_ = 0;
     items_removed_ = 0;
@@ skipping 454 matching lines @@
   model_.SetFoldersEnabled(false);
   ASSERT_FALSE(model_.FindFolderItem(folder_id));
   ASSERT_TRUE(model_.FindFolderItem(oem_folder_id));
   EXPECT_EQ("Item 0,Item 1,oem_folder", GetModelContents());
 
   // Ensure folder creation fails.
   EXPECT_EQ(std::string(), model_.MergeItems(item0->id(), item1->id()));
 }
 
 }  // namespace app_list