Update {virtual,override,final} to follow C++11 style.

chrome/browser/history/android/android_urls_database_unittest.cc

Index: chrome/browser/history/android/android_urls_database_unittest.cc
diff --git a/chrome/browser/history/android/android_urls_database_unittest.cc b/chrome/browser/history/android/android_urls_database_unittest.cc
index cbc27559b31d2639cd9ecbf31d500bddc5fabea7..dc1b65a73ca49c2ad378a3c75a88069852e514d9 100644
--- a/chrome/browser/history/android/android_urls_database_unittest.cc
+++ b/chrome/browser/history/android/android_urls_database_unittest.cc
@@ -20,10 +20,10 @@ namespace history {
 class AndroidURLsMigrationTest : public HistoryUnitTestBase {
  public:
   AndroidURLsMigrationTest() {}
-  virtual ~AndroidURLsMigrationTest() {}
+  ~AndroidURLsMigrationTest() override {}
 
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     profile_.reset(new TestingProfile);
 
     base::FilePath data_path;