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

chrome/browser/ui/cocoa/website_settings/permission_bubble_controller_unittest.mm

 // Copyright 2014 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/website_settings/permission_bubble_controller.h"
 
 #include <Carbon/Carbon.h>
 
 #include "base/mac/foundation_util.h"
 #include "base/stl_util.h"
@@ skipping 34 matching lines @@
   public PermissionBubbleView::Delegate {
  public:
 
   MOCK_METHOD2(ToggleAccept, void(int, bool));
   MOCK_METHOD0(SetCustomizationMode, void());
   MOCK_METHOD0(Accept, void());
   MOCK_METHOD0(Deny, void());
   MOCK_METHOD0(Closing, void());
   MOCK_METHOD1(SetView, void(PermissionBubbleView*));
 
-  virtual void SetUp() override {
+  void SetUp() override {
     CocoaTest::SetUp();
     bridge_.reset(new PermissionBubbleCocoa(nil));
     AddRequest(kPermissionA);
     controller_ = [[PermissionBubbleController alloc]
         initWithParentWindow:test_window()
                       bridge:bridge_.get()];
   }
 
-  virtual void TearDown() override {
+  void TearDown() override {
     [controller_ close];
     chrome::testing::NSRunLoopRunAllPending();
     STLDeleteElements(&requests_);
     CocoaTest::TearDown();
   }
 
   void AddRequest(const std::string& title) {
     MockPermissionBubbleRequest* request = new MockPermissionBubbleRequest(
         title,
         l10n_util::GetStringUTF8(IDS_PERMISSION_ALLOW),
@@ skipping 224 matching lines @@
                withDelegate:this
                 forRequests:requests_
                acceptStates:accept_states_];
 
   EXPECT_TRUE([[controller_ window] isVisible]);
   [[controller_ window]
       performKeyEquivalent:cocoa_test_event_utils::KeyEventWithKeyCode(
                                kVK_Escape, '\e', NSKeyDown, 0)];
   EXPECT_FALSE([[controller_ window] isVisible]);
 }