Standardize usage of virtual/override/final specifiers.

extensions/common/manifest_test.h

 // 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.
 
 #ifndef EXTENSIONS_COMMON_MANIFEST_TEST_H_
 #define EXTENSIONS_COMMON_MANIFEST_TEST_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/manifest.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace base {
 class FilePath;
 }
 
 namespace extensions {
 
 // Base class for tests that parse a manifest file.
 class ManifestTest : public testing::Test {
  public:
   ManifestTest();
-  virtual ~ManifestTest();
+  ~ManifestTest() override;
 
  protected:
   // Helper class that simplifies creating methods that take either a filename
   // to a manifest or the manifest itself.
   class ManifestData {
    public:
     explicit ManifestData(const char* name);
     ManifestData(base::DictionaryValue* manifest, const char* name);
     explicit ManifestData(scoped_ptr<base::DictionaryValue> manifest);
     // C++98 requires the copy constructor for a type to be visible if you
@@ skipping 115 matching lines @@
 
   bool enable_apps_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ManifestTest);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_MANIFEST_TEST_H_