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

chrome/browser/web_applications/web_app_mac_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/web_applications/web_app_mac.h"
 
 #import <Cocoa/Cocoa.h>
 #include <errno.h>
 #include <sys/xattr.h>
 
@@ skipping 56 matching lines @@
   info.url = GURL("http://example.com/");
   info.profile_path = base::FilePath("user_data_dir").Append("Profile 1");
   info.profile_name = "profile name";
   return info;
 }
 
 class WebAppShortcutCreatorTest : public testing::Test {
  protected:
   WebAppShortcutCreatorTest() {}
 
-  virtual void SetUp() {
+  void SetUp() override {
     base::mac::SetBaseBundleID(kFakeChromeBundleId);
 
     EXPECT_TRUE(temp_app_data_dir_.CreateUniqueTempDir());
     EXPECT_TRUE(temp_destination_dir_.CreateUniqueTempDir());
     app_data_dir_ = temp_app_data_dir_.path();
     destination_dir_ = temp_destination_dir_.path();
 
     info_ = GetShortcutInfo();
     shim_base_name_ = base::FilePath(
         info_.profile_path.BaseName().value() +
@@ skipping 256 matching lines @@
               [file_handler_1 objectForKey:app_mode::kCFBundleTypeRoleKey]);
   NSArray* file_handler_1_extensions =
       [file_handler_1 objectForKey:app_mode::kCFBundleTypeExtensionsKey];
   EXPECT_TRUE([file_handler_1_extensions containsObject:@"ext2"]);
   NSArray* file_handler_1_types =
       [file_handler_1 objectForKey:app_mode::kCFBundleTypeMIMETypesKey];
   EXPECT_TRUE([file_handler_1_types containsObject:@"type2"]);
 }
 
 }  // namespace web_app