Standardize usage of virtual/override/final in chrome/browser/extensions/

chrome/browser/extensions/favicon_downloader_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 "chrome/browser/extensions/favicon_downloader.h"
 
 #include "base/files/scoped_temp_dir.h"
 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
 #include "content/public/common/favicon_url.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 33 matching lines @@
  public:
   TestFaviconDownloader(content::WebContents* web_contents,
                         std::vector<GURL> extra_favicon_urls)
       : FaviconDownloader(
             web_contents,
             extra_favicon_urls,
             base::Bind(&TestFaviconDownloader::DownloadsComplete,
                        base::Unretained(this))),
         id_counter_(0) {
   }
-  virtual ~TestFaviconDownloader() {}
+  ~TestFaviconDownloader() override {}
 
-  virtual int DownloadImage(const GURL& url) override {
-    return id_counter_++;
-  }
+  int DownloadImage(const GURL& url) override { return id_counter_++; }
 
-  virtual std::vector<content::FaviconURL> GetFaviconURLsFromWebContents()
-      override {
+  std::vector<content::FaviconURL> GetFaviconURLsFromWebContents() override {
     return initial_favicon_urls_;
   }
 
   size_t pending_requests() const {
     return in_progress_requests_.size();
   }
 
   void DownloadsComplete(bool success,
                          const FaviconDownloader::FaviconMap& map) {
     favicon_map_ = map;
@@ skipping 109 matching lines @@
   // Only 1 download should have been initiated for |empty_favicon| even though
   // the URL was in both the web app info and the favicon urls.
   downloader.CompleteImageDownload(2, empty_favicon, std::vector<gfx::Size>());
   EXPECT_EQ(0u, downloader.pending_requests());
 
   EXPECT_EQ(3u, downloader.favicon_map().size());
   EXPECT_EQ(0u, downloader.favicon_map()[empty_favicon].size());
   EXPECT_EQ(1u, downloader.favicon_map()[favicon_url_1].size());
   EXPECT_EQ(2u, downloader.favicon_map()[favicon_url_2].size());
 }