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

content/browser/renderer_host/render_process_host_browsertest.cc

 // Copyright 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/command_line.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/common/child_process_messages.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_process_host_observer.h"
 #include "content/public/browser/render_view_host.h"
@@ skipping 186 matching lines @@
   }
 }
 
 #if defined(OS_WIN)
 // Provides functionality to test renderer processes with the Win32K lockdown
 // process mitigation.
 class Win32KLockdownRendererProcessHostTest : public RenderProcessHostTest {
  public:
   Win32KLockdownRendererProcessHostTest() {}
 
-  virtual ~Win32KLockdownRendererProcessHostTest() {}
+  ~Win32KLockdownRendererProcessHostTest() override {}
 
  protected:
-  virtual void SetUp() override {
+  void SetUp() override {
     base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
     command_line->AppendSwitch(switches::kEnableWin32kRendererLockDown);
     RenderProcessHostTest::SetUp();
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(Win32KLockdownRendererProcessHostTest);
 };
 
 // Tests whether navigation requests with the Win32K lockdown mitigation set
 // work correctly.
 IN_PROC_BROWSER_TEST_F(Win32KLockdownRendererProcessHostTest,
                        RendererWin32KLockdownNavigationTest) {
   if (base::win::GetVersion() < base::win::VERSION_WIN8)
     return;
 
   ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
 
   GURL test_url = embedded_test_server()->GetURL("/simple_page.html");
   NavigateToURL(shell(), test_url);
 
   EXPECT_EQ(1, RenderProcessHostCount());
   EXPECT_EQ(0, process_exits_);
 }
 #endif
 
 }  // namespace
 }  // namespace content