Standardize usage of virtual/override/final specifiers.

chrome/browser/policy/cloud/component_cloud_policy_browsertest.cc

 // Copyright (c) 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 <string>
 
 #include "base/base64.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
@@ skipping 85 matching lines @@
   base::ReplaceChars(*encoded, "/", "_", encoded);
   return true;
 }
 #endif
 
 }  // namespace
 
 class ComponentCloudPolicyTest : public ExtensionBrowserTest {
  protected:
   ComponentCloudPolicyTest() {}
-  virtual ~ComponentCloudPolicyTest() {}
+  ~ComponentCloudPolicyTest() override {}
 
   void SetUpCommandLine(CommandLine* command_line) override {
     ExtensionBrowserTest::SetUpCommandLine(command_line);
 #if defined(OS_CHROMEOS)
     // ExtensionBrowserTest sets the login users to a non-managed value;
     // replace it. This is the default username sent in policy blobs from the
     // testserver.
     command_line->AppendSwitchASCII(
         ::chromeos::switches::kLoginUser, "user@example.com");
 #endif
@@ skipping 221 matching lines @@
   ExtensionTestMessageListener signin_policy_listener(kTestPolicyJSON, true);
   event_listener2.Reply("get-policy-Name");
   EXPECT_TRUE(signin_policy_listener.WaitUntilSatisfied());
 
   // And the cache is back.
   EXPECT_TRUE(base::PathExists(cache_path));
 }
 #endif
 
 }  // namespace policy