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

chrome/browser/ui/cocoa/one_click_signin_bubble_controller_unittest.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/one_click_signin_bubble_controller.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 13 matching lines @@
 
 class OneClickSigninBubbleControllerTest : public CocoaProfileTest {
  public:
   OneClickSigninBubbleControllerTest()
       : weak_ptr_factory_(this) {
     start_sync_callback_ =
             base::Bind(&OneClickSigninBubbleControllerTest::OnStartSync,
                        weak_ptr_factory_.GetWeakPtr());
   }
 
-  virtual void SetUp() override {
+  void SetUp() override {
     CocoaProfileTest::SetUp();
     BrowserWindowCocoa* browser_window =
         static_cast<BrowserWindowCocoa*>(browser()->window());
     controller_.reset([[OneClickSigninBubbleController alloc]
             initWithBrowserWindowController:browser_window->cocoa_controller()
                                 webContents:nil
                                errorMessage:nil
                                    callback:start_sync_callback_]);
     [controller_ showWindow:nil];
     EXPECT_NSEQ(@"OneClickSigninBubble",
                 [[controller_ viewController] nibName]);
   }
 
-  virtual void TearDown() override {
+  void TearDown() override {
     controller_.reset();
     CocoaProfileTest::TearDown();
   }
 
   MOCK_METHOD1(OnStartSync, void(OneClickSigninSyncStarter::StartSyncMode));
 
  protected:
   BrowserWindow::StartSyncCallback start_sync_callback_;
   base::scoped_nsobject<OneClickSigninBubbleController> controller_;
 
@@ skipping 19 matching lines @@
 }
 
 // Test that the bubble does not sync if the bubble is closed.
 TEST_F(OneClickSigninBubbleControllerTest, Close) {
   EXPECT_CALL(*this, OnStartSync(
       OneClickSigninSyncStarter::SYNC_WITH_DEFAULT_SETTINGS)).Times(0);
   [controller_ close];
 }
 
 }  // namespace