Standardize usage of virtual/override/final specifiers.

remoting/host/ipc_desktop_environment_unittest.cc

 // Copyright (c) 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/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 103 matching lines @@
 
   EXPECT_TRUE(handled);
   return handled;
 }
 
 }  // namespace
 
 class IpcDesktopEnvironmentTest : public testing::Test {
  public:
   IpcDesktopEnvironmentTest();
-  virtual ~IpcDesktopEnvironmentTest();
+  ~IpcDesktopEnvironmentTest() override;
 
-  virtual void SetUp() override;
+  void SetUp() override;
 
   void ConnectTerminal(int terminal_id,
                        const ScreenResolution& resolution,
                        bool virtual_terminal);
   void DisconnectTerminal(int terminal_id);
 
   // Creates a DesktopEnvironment with a fake webrtc::DesktopCapturer, to mock
   // DesktopEnvironmentFactory::Create().
   DesktopEnvironment* CreateDesktopEnvironment();
 
@@ skipping 518 matching lines @@
   screen_controls_->SetScreenResolution(ScreenResolution(
       webrtc::DesktopSize(100, 100),
       webrtc::DesktopVector(96, 96)));
 
   task_runner_ = NULL;
   io_task_runner_ = NULL;
   main_run_loop_.Run();
 }
 
 }  // namespace remoting