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

remoting/host/desktop_process_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 "remoting/host/desktop_process.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/location.h"
 #include "base/memory/ref_counted.h"
@@ skipping 23 matching lines @@
 using testing::InSequence;
 using testing::Return;
 
 namespace remoting {
 
 namespace {
 
 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);
 };
 
 class MockNetworkListener : public IPC::Listener {
  public:
   MockNetworkListener() {}
-  virtual ~MockNetworkListener() {}
+  ~MockNetworkListener() override {}
 
-  virtual bool OnMessageReceived(const IPC::Message& message) override;
+  bool OnMessageReceived(const IPC::Message& message) override;
 
   MOCK_METHOD1(OnChannelConnected, void(int32));
   MOCK_METHOD0(OnChannelError, void());
 
   MOCK_METHOD0(OnDesktopEnvironmentCreated, void());
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockNetworkListener);
 };
 
@@ skipping 264 matching lines @@
 }
 
 // Run the desktop process and ask it to crash.
 TEST_F(DesktopProcessTest, DeathTest) {
   testing::GTEST_FLAG(death_test_style) = "threadsafe";
 
   EXPECT_DEATH(RunDeathTest(), "");
 }
 
 }  // namespace remoting