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

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 39 matching lines @@
 
 using protocol::test::EqualsTouchEvent;
 using protocol::test::EqualsTouchEventTypeAndId;
 
 namespace {
 
 // Receives messages sent from the network process to the daemon.
 class FakeDaemonSender : public IPC::Sender {
  public:
   FakeDaemonSender() {}
-  virtual ~FakeDaemonSender() {}
+  ~FakeDaemonSender() override {}
 
   // IPC::Sender implementation.
-  virtual bool Send(IPC::Message* message) override;
+  bool Send(IPC::Message* message) override;
 
   MOCK_METHOD3(ConnectTerminal, void(int, const ScreenResolution&, bool));
   MOCK_METHOD1(DisconnectTerminal, void(int));
   MOCK_METHOD2(SetScreenResolution, void(int, const ScreenResolution&));
 
  private:
   void OnMessageReceived(const IPC::Message& message);
 
   DISALLOW_COPY_AND_ASSIGN(FakeDaemonSender);
 };
 
 // Receives messages sent from the desktop process to the daemon.
 class MockDaemonListener : public IPC::Listener {
  public:
   MockDaemonListener() {}
-  virtual ~MockDaemonListener() {}
+  ~MockDaemonListener() override {}
 
-  virtual bool OnMessageReceived(const IPC::Message& message) override;
+  bool OnMessageReceived(const IPC::Message& message) override;
 
   MOCK_METHOD1(OnDesktopAttached, void(IPC::PlatformFileForTransit));
   MOCK_METHOD1(OnChannelConnected, void(int32));
   MOCK_METHOD0(OnChannelError, void());
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockDaemonListener);
 };
 
 bool FakeDaemonSender::Send(IPC::Message* message) {
@@ skipping 621 matching lines @@
   screen_controls_->SetScreenResolution(ScreenResolution(
       webrtc::DesktopSize(100, 100),
       webrtc::DesktopVector(96, 96)));
 
   task_runner_ = nullptr;
   io_task_runner_ = nullptr;
   main_run_loop_.Run();
 }
 
 }  // namespace remoting