Standardize usage of virtual/override/final specifiers.

content/browser/browser_thread_unittest.cc

 // Copyright (c) 2012 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/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/sequenced_task_runner_helpers.h"
 #include "content/browser/browser_thread_impl.h"
 #include "content/public/test/test_browser_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
 namespace content {
 
 class BrowserThreadTest : public testing::Test {
  public:
   void Release() const {
     CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
     loop_.PostTask(FROM_HERE, base::MessageLoop::QuitClosure());
   }
 
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     ui_thread_.reset(new BrowserThreadImpl(BrowserThread::UI));
     file_thread_.reset(new BrowserThreadImpl(BrowserThread::FILE));
     ui_thread_->Start();
     file_thread_->Start();
   }
 
-  virtual void TearDown() {
+  void TearDown() override {
     ui_thread_->Stop();
     file_thread_->Stop();
   }
 
   static void BasicFunction(base::MessageLoop* message_loop) {
     CHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
     message_loop->PostTask(FROM_HERE, base::MessageLoop::QuitClosure());
   }
 
   class DeletedOnFile
@@ skipping 65 matching lines @@
   ASSERT_TRUE(BrowserThread::PostTaskAndReply(
       BrowserThread::FILE,
       FROM_HERE,
       base::Bind(&base::DoNothing),
       base::Bind(&base::MessageLoop::Quit,
                  base::Unretained(base::MessageLoop::current()->current()))));
   base::MessageLoop::current()->Run();
 }
 
 }  // namespace content