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

chrome/service/service_utility_process_host.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 "chrome/service/service_utility_process_host.h"
 
 #include <queue>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 42 matching lines @@
                             id,
                             SERVICE_UTILITY_EVENT_MAX);
 }
 
 // NOTE: changes to this class need to be reviewed by the security team.
 class ServiceSandboxedProcessLauncherDelegate
     : public content::SandboxedProcessLauncherDelegate {
  public:
   ServiceSandboxedProcessLauncherDelegate() {}
 
-  virtual void PreSpawnTarget(sandbox::TargetPolicy* policy,
-                              bool* success) override {
+  void PreSpawnTarget(sandbox::TargetPolicy* policy, bool* success) override {
     // Service process may run as windows service and it fails to create a
     // window station.
     policy->SetAlternateDesktop(false);
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ServiceSandboxedProcessLauncherDelegate);
 };
 
 }  // namespace
@@ skipping 341 matching lines @@
     return false;
   }
   printing::Emf emf;
   if (!emf.InitFromData(data.data(), data.size())) {
     OnRenderPDFPagesToMetafileDone(false);
     return false;
   }
   OnRenderPDFPagesToMetafilePageDone(scale_factor, emf);
   return true;
 }