Standardize usage of virtual/override/final specifiers.

chrome/browser/sessions/persistent_tab_restore_service_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/sessions/persistent_tab_restore_service.h"
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/strings/stringprintf.h"
@@ skipping 48 matching lines @@
   PersistentTabRestoreServiceTest()
     : url1_("http://1"),
       url2_("http://2"),
       url3_("http://3"),
       user_agent_override_(
           "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.19"
           " (KHTML, like Gecko) Chrome/18.0.1025.45 Safari/535.19"),
       time_factory_(NULL) {
   }
 
-  virtual ~PersistentTabRestoreServiceTest() {
-  }
+  ~PersistentTabRestoreServiceTest() override {}
 
  protected:
   enum {
     kMaxEntries = TabRestoreServiceHelper::kMaxEntries,
   };
 
   // testing::Test:
-  virtual void SetUp() override {
+  void SetUp() override {
     ChromeRenderViewHostTestHarness::SetUp();
     time_factory_ = new PersistentTabRestoreTimeFactory();
     service_.reset(new PersistentTabRestoreService(profile(), time_factory_));
   }
 
-  virtual void TearDown() override {
+  void TearDown() override {
     service_->Shutdown();
     service_.reset();
     delete time_factory_;
     ChromeRenderViewHostTestHarness::TearDown();
   }
 
   TabRestoreService::Entries* mutable_entries() {
     return service_->mutable_entries();
   }
 
@@ skipping 659 matching lines @@
 
   EXPECT_FALSE(service_->IsLoaded());
   TestTabRestoreServiceObserver observer;
   service_->AddObserver(&observer);
   EXPECT_EQ(max_entries, service_->entries().size());
   SynchronousLoadTabsFromLastSession();
   EXPECT_TRUE(observer.got_loaded());
   EXPECT_TRUE(service_->IsLoaded());
   service_->RemoveObserver(&observer);
 }