Standardize usage of virtual/override/final specifiers.

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 50 matching lines @@
   size_t items_updated_;
 
   DISALLOW_COPY_AND_ASSIGN(TestObserver);
 };
 
 }  // namespace
 
 class AppListModelTest : public testing::Test {
  public:
   AppListModelTest() {}
-  virtual ~AppListModelTest() {}
+  ~AppListModelTest() override {}
 
   // testing::Test overrides:
-  virtual void SetUp() override {
-    model_.AddObserver(&observer_);
-  }
-  virtual void TearDown() override {
-    model_.RemoveObserver(&observer_);
-  }
+  void SetUp() override { model_.AddObserver(&observer_); }
+  void TearDown() override { model_.RemoveObserver(&observer_); }
 
  protected:
   bool ItemObservedByFolder(AppListFolderItem* folder,
                             AppListItem* item) {
     return item->observers_.HasObserver(folder);
   }
 
   std::string GetItemListContents(AppListItemList* item_list) {
     std::string s;
     for (size_t i = 0; i < item_list->item_count(); ++i) {
@@ skipping 130 matching lines @@
         model_.top_level_item_list()->item_at(i)->position().GreaterThan(
             model_.top_level_item_list()->item_at(i - 1)->position()));
   }
 }
 
 class AppListModelFolderTest : public AppListModelTest {
  public:
   AppListModelFolderTest() {
     model_.SetFoldersEnabled(true);
   }
-  virtual ~AppListModelFolderTest() {}
+  ~AppListModelFolderTest() override {}
 
   // testing::Test overrides:
-  virtual void SetUp() override {
-    AppListModelTest::SetUp();
-  }
-  virtual void TearDown() override {
-    AppListModelTest::TearDown();
-  }
+  void SetUp() override { AppListModelTest::SetUp(); }
+  void TearDown() override { AppListModelTest::TearDown(); }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AppListModelFolderTest);
 };
 
 TEST_F(AppListModelFolderTest, FolderItem) {
   AppListFolderItem* folder =
       new AppListFolderItem("folder1", AppListFolderItem::FOLDER_TYPE_NORMAL);
   const size_t num_folder_apps = 8;
   const size_t num_observed_apps = 4;
@@ skipping 259 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