Standardize usage of virtual/override/final specifiers.

content/browser/frame_host/render_frame_host_manager_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 "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/test/histogram_tester.h"
 #include "base/time/time.h"
 #include "content/browser/frame_host/cross_site_transferring_request.h"
@@ skipping 279 matching lines @@
   }
   std::set<std::pair<int, int> > live_routes_;
   std::set<std::pair<int, int> > deleted_routes_;
 };
 
 }  // namespace
 
 class RenderFrameHostManagerTest
     : public RenderViewHostImplTestHarness {
  public:
-  virtual void SetUp() override {
+  void SetUp() override {
     RenderViewHostImplTestHarness::SetUp();
     WebUIControllerFactory::RegisterFactory(&factory_);
     lifetime_checker_.reset(new FrameLifetimeConsistencyChecker(contents()));
   }
 
-  virtual void TearDown() override {
+  void TearDown() override {
     lifetime_checker_.reset();
     RenderViewHostImplTestHarness::TearDown();
     WebUIControllerFactory::UnregisterFactoryForTesting(&factory_);
   }
 
   void set_should_create_webui(bool should_create_webui) {
     factory_.set_should_create_webui(should_create_webui);
   }
 
   void NavigateActiveAndCommit(const GURL& url) {
@@ skipping 1479 matching lines @@
    pending_rfh->GetSiteInstance()->increment_active_frame_count();
 
     contents()->GetMainFrame()->OnMessageReceived(
         FrameHostMsg_BeforeUnload_ACK(0, false, now, now));
     EXPECT_FALSE(contents()->cross_navigation_pending());
     EXPECT_FALSE(rfh_deleted_observer.deleted());
   }
 }
 
 }  // namespace content