Standardize usage of virtual/override/final specifiers.

chrome/browser/ui/webui/theme_source_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 "base/bind.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/message_loop/message_loop.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/theme_source.h"
 #include "chrome/common/url_constants.h"
@@ skipping 14 matching lines @@
   ThemeSource* theme_source() const { return theme_source_.get(); }
   size_t result_data_size() const { return result_data_size_; }
 
   void StartDataRequest(const std::string& source) {
     theme_source()->StartDataRequest(source, -1, -1, callback_);
   }
 
   size_t result_data_size_;
 
  private:
-  virtual void SetUp() {
+  void SetUp() override {
     profile_.reset(new TestingProfile());
     theme_source_.reset(new ThemeSource(profile_.get()));
     callback_ = base::Bind(&WebUISourcesTest::SendResponse,
                            base::Unretained(this));
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     theme_source_.reset();
     profile_.reset();
   }
 
   void SendResponse(base::RefCountedMemory* data) {
     result_data_size_ = data ? data->size() : 0;
   }
 
   content::URLDataSource::GotDataCallback callback_;
 
@@ skipping 34 matching lines @@
   StartDataRequest("css/new_tab_theme.css");
   EXPECT_NE(result_data_size_, empty_size);
 
   StartDataRequest("css/new_tab_theme.css?pie");
   EXPECT_NE(result_data_size_, empty_size);
 
   // Check that we send NULL back when we can't find what we're looking for.
   StartDataRequest("css/WRONGURL");
   EXPECT_EQ(result_data_size_, empty_size);
 }