Standardize usage of virtual/override/final specifiers.

ui/app_list/pagination_model_unittest.cc

 // Copyright (c) 2012 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/pagination_model.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
@@ skipping 94 matching lines @@
   int transition_page_;
 
   std::string selected_pages_;
 
   DISALLOW_COPY_AND_ASSIGN(TestPaginationModelObserver);
 };
 
 class PaginationModelTest : public testing::Test {
  public:
   PaginationModelTest() {}
-  virtual ~PaginationModelTest() {}
+  ~PaginationModelTest() override {}
 
   // testing::Test overrides:
-  virtual void SetUp() override {
+  void SetUp() override {
     pagination_.SetTotalPages(5);
     pagination_.SetTransitionDurations(1, 1);
     observer_.set_model(&pagination_);
     pagination_.AddObserver(&observer_);
   }
-  virtual void TearDown() override {
+  void TearDown() override {
     pagination_.RemoveObserver(&observer_);
     observer_.set_model(NULL);
   }
 
  protected:
   void SetStartPageAndExpects(int start_page,
                               int expected_selection,
                               int expected_transition_start,
                               int expected_transition_end) {
     observer_.set_expected_page_selection(0);
@@ skipping 288 matching lines @@
   EXPECT_EQ(1, pagination_.selected_page());
 
   // But if the currently selected_page exceeds the total number of pages,
   // it automatically switches to the last page.
   pagination_.SetTotalPages(1);
   EXPECT_EQ(0, pagination_.selected_page());
 }
 
 }  // namespace test
 }  // namespace app_list