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

chrome/browser/download/download_ui_controller.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 "chrome/browser/download/download_ui_controller.h"
 
 #include "base/callback.h"
 #include "base/stl_util.h"
 #include "chrome/browser/download/download_item_model.h"
 #include "chrome/browser/ui/browser_finder.h"
@@ skipping 11 matching lines @@
 namespace {
 
 // DefaultUIControllerDelegate{Android,} is used when a DownloadUIController is
 // constructed without specifying an explicit Delegate.
 #if defined(OS_ANDROID)
 
 class DefaultUIControllerDelegateAndroid
     : public DownloadUIController::Delegate {
  public:
   DefaultUIControllerDelegateAndroid() {}
-  virtual ~DefaultUIControllerDelegateAndroid() {}
+  ~DefaultUIControllerDelegateAndroid() override {}
 
  private:
   // DownloadUIController::Delegate
-  virtual void OnNewDownloadReady(content::DownloadItem* item) override;
+  void OnNewDownloadReady(content::DownloadItem* item) override;
 };
 
 void DefaultUIControllerDelegateAndroid::OnNewDownloadReady(
     content::DownloadItem* item) {
   // The Android DownloadController is only interested in IN_PROGRESS downloads.
   // Ones which are INTERRUPTED etc. can't be handed over to the Android
   // DownloadManager.
   if (item->GetState() != content::DownloadItem::IN_PROGRESS)
     return;
 
@@ skipping 79 matching lines @@
   if (item_model.WasUINotified() || !item_model.ShouldNotifyUI())
     return;
 
   // Wait until the target path is determined.
   if (item->GetTargetFilePath().empty())
     return;
 
   DownloadItemModel(item).SetWasUINotified(true);
   delegate_->OnNewDownloadReady(item);
 }