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

chrome/browser/printing/printing_layout_browsertest.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 "base/command_line.h"
 #include "base/files/file_enumerator.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/path_service.h"
@@ skipping 27 matching lines @@
 
 class PrintingLayoutTest : public PrintingTest<InProcessBrowserTest>,
                            public content::NotificationObserver {
  public:
   PrintingLayoutTest() {
     base::FilePath browser_directory;
     PathService::Get(chrome::DIR_APP, &browser_directory);
     emf_path_ = browser_directory.AppendASCII("metafile_dumps");
   }
 
-  virtual void SetUp() override {
+  void SetUp() override {
     // Make sure there is no left overs.
     CleanupDumpDirectory();
     InProcessBrowserTest::SetUp();
   }
 
-  virtual void TearDown() override {
+  void TearDown() override {
     InProcessBrowserTest::TearDown();
     base::DeleteFile(emf_path_, true);
   }
 
-  virtual void SetUpCommandLine(base::CommandLine* command_line) override {
+  void SetUpCommandLine(base::CommandLine* command_line) override {
     command_line->AppendSwitchPath(switches::kDebugPrint, emf_path_);
   }
 
  protected:
   void PrintNowTab() {
     registrar_.Add(this, chrome::NOTIFICATION_PRINT_JOB_EVENT,
                    content::NotificationService::AllSources());
 
     content::WebContents* web_contents =
         browser()->tab_strip_model()->GetActiveWebContents();
@@ skipping 390 matching lines @@
 
     // Force a navigation elsewhere to verify that it's fine with it.
     url = test_server()->GetURL("files/printing/test1.html");
     ui_test_utils::NavigateToURL(browser(), url);
   }
   chrome::CloseWindow(browser());
   content::RunAllPendingInMessageLoop();
 
   EXPECT_EQ(0., CompareWithResult(L"iframe")) << L"iframe";
 }