Standardize usage of virtual/override/final in components/

components/history/core/test/history_client_fake_bookmarks.h

Index: components/history/core/test/history_client_fake_bookmarks.h
diff --git a/components/history/core/test/history_client_fake_bookmarks.h b/components/history/core/test/history_client_fake_bookmarks.h
index b4afeb15979ec1a899f1a855e62c49746b232898..ee5c5409c8b6e62bebebeaa2a34fd5cecd041d58 100644
--- a/components/history/core/test/history_client_fake_bookmarks.h
+++ b/components/history/core/test/history_client_fake_bookmarks.h
@@ -16,7 +16,7 @@ namespace history {
 class HistoryClientFakeBookmarks : public HistoryClient {
  public:
   HistoryClientFakeBookmarks();
-  virtual ~HistoryClientFakeBookmarks();
+  ~HistoryClientFakeBookmarks() override;
 
   void ClearAllBookmarks();
   void AddBookmark(const GURL& url);
@@ -24,8 +24,8 @@ class HistoryClientFakeBookmarks : public HistoryClient {
   void DelBookmark(const GURL& url);
 
   // HistoryClient:
-  virtual bool IsBookmarked(const GURL& url) override;
-  virtual void GetBookmarks(std::vector<URLAndTitle>* bookmarks) override;
+  bool IsBookmarked(const GURL& url) override;
+  void GetBookmarks(std::vector<URLAndTitle>* bookmarks) override;
 
  private:
   std::map<GURL, base::string16> bookmarks_;