Standardize usage of virtual/override/final specifiers.

components/omnibox/base_search_provider_unittest.cc

 // Copyright 2014 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 "components/omnibox/base_search_provider.h"
 
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/omnibox/autocomplete_match.h"
 #include "components/omnibox/autocomplete_match_type.h"
@@ skipping 75 matching lines @@
 
  protected:
   virtual ~TestBaseSearchProvider() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TestBaseSearchProvider);
 };
 
 class BaseSearchProviderTest : public testing::Test {
  public:
-  virtual ~BaseSearchProviderTest() {}
+  ~BaseSearchProviderTest() override {}
 
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     service_.reset(
         new TemplateURLService(NULL,
                                scoped_ptr<SearchTermsData>(new SearchTermsData),
                                NULL,
                                scoped_ptr<TemplateURLServiceClient>(),
                                NULL,
                                NULL,
                                base::Closure()));
     provider_ = new NiceMock<TestBaseSearchProvider>(
         service_.get(),
@@ skipping 73 matching lines @@
   EXPECT_EQ(answer_type, match.answer_type);
   EXPECT_EQ(AutocompleteMatchType::SEARCH_HISTORY, match.type);
   EXPECT_EQ(1300, match.relevance);
 
   EXPECT_EQ(answer_contents, duplicate.answer_contents);
   EXPECT_EQ(answer_type, duplicate.answer_type);
   EXPECT_EQ(AutocompleteMatchType::SEARCH_SUGGEST, duplicate.type);
   EXPECT_EQ(850, duplicate.relevance);
 
 }