Standardize usage of virtual/override/final in chrome/browser/download/

chrome/browser/download/chrome_download_manager_delegate.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 "chrome/browser/download/chrome_download_manager_delegate.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
@@ skipping 61 matching lines @@
 #if defined(FULL_SAFE_BROWSING)
 
 // String pointer used for identifying safebrowing data associated with
 // a download item.
 const char kSafeBrowsingUserDataKey[] = "Safe Browsing ID";
 
 // The state of a safebrowsing check.
 class SafeBrowsingState : public DownloadCompletionBlocker {
  public:
   SafeBrowsingState() {}
-  virtual ~SafeBrowsingState();
+  ~SafeBrowsingState() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SafeBrowsingState);
 };
 
 SafeBrowsingState::~SafeBrowsingState() {}
 
 #endif  // FULL_SAFE_BROWSING
 
 // Used with GetPlatformDownloadPath() to indicate which platform path to
@@ skipping 640 matching lines @@
       path.MatchesExtension(FILE_PATH_LITERAL(".xht")) ||
       path.MatchesExtension(FILE_PATH_LITERAL(".xhtm")) ||
       path.MatchesExtension(FILE_PATH_LITERAL(".xhtml")) ||
       path.MatchesExtension(FILE_PATH_LITERAL(".xsl")) ||
       path.MatchesExtension(FILE_PATH_LITERAL(".xslt"))) {
     return true;
   }
 #endif
   return false;
 }