Standardize usage of virtual/override/final in extensions/

extensions/browser/api/storage/storage_api.h

 // Copyright 2014 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_BROWSER_API_STORAGE_STORAGE_API_H_
 #define EXTENSIONS_BROWSER_API_STORAGE_STORAGE_API_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "extensions/browser/api/storage/settings_namespace.h"
 #include "extensions/browser/api/storage/settings_observer.h"
 #include "extensions/browser/extension_function.h"
 #include "extensions/browser/value_store/value_store.h"
 
 namespace extensions {
 
 // Superclass of all settings functions.
 class SettingsFunction : public UIThreadExtensionFunction {
  protected:
   SettingsFunction();
-  virtual ~SettingsFunction();
+  ~SettingsFunction() override;
 
   // ExtensionFunction:
-  virtual bool ShouldSkipQuotaLimiting() const override;
-  virtual ResponseAction Run() override;
+  bool ShouldSkipQuotaLimiting() const override;
+  ResponseAction Run() override;
 
   // Extension settings function implementations should do their work here.
   // The StorageFrontend makes sure this is posted to the appropriate thread.
   virtual ResponseValue RunWithStorage(ValueStore* storage) = 0;
 
   // Handles the |result| of a read function.
   // - If the result succeeded, this will set |result_| and return.
   // - If |result| failed with a ValueStore::CORRUPTION error, this will call
   //   RestoreStorageAndRetry(), and return that result.
   // - If the |result| failed with a different error, this will set |error_|
@@ skipping 34 matching lines @@
 
   // Observers, cached so that it's only grabbed from the UI thread.
   scoped_refptr<SettingsObserverList> observers_;
 };
 
 class StorageStorageAreaGetFunction : public SettingsFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("storage.get", STORAGE_GET)
 
  protected:
-  virtual ~StorageStorageAreaGetFunction() {}
+  ~StorageStorageAreaGetFunction() override {}
 
   // SettingsFunction:
-  virtual ResponseValue RunWithStorage(ValueStore* storage) override;
+  ResponseValue RunWithStorage(ValueStore* storage) override;
 };
 
 class StorageStorageAreaSetFunction : public SettingsFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("storage.set", STORAGE_SET)
 
  protected:
-  virtual ~StorageStorageAreaSetFunction() {}
+  ~StorageStorageAreaSetFunction() override {}
 
   // SettingsFunction:
-  virtual ResponseValue RunWithStorage(ValueStore* storage) override;
+  ResponseValue RunWithStorage(ValueStore* storage) override;
 
   // ExtensionFunction:
-  virtual void GetQuotaLimitHeuristics(
-      QuotaLimitHeuristics* heuristics) const override;
+  void GetQuotaLimitHeuristics(QuotaLimitHeuristics* heuristics) const override;
 };
 
 class StorageStorageAreaRemoveFunction : public SettingsFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("storage.remove", STORAGE_REMOVE)
 
  protected:
-  virtual ~StorageStorageAreaRemoveFunction() {}
+  ~StorageStorageAreaRemoveFunction() override {}
 
   // SettingsFunction:
-  virtual ResponseValue RunWithStorage(ValueStore* storage) override;
+  ResponseValue RunWithStorage(ValueStore* storage) override;
 
   // ExtensionFunction:
-  virtual void GetQuotaLimitHeuristics(
-      QuotaLimitHeuristics* heuristics) const override;
+  void GetQuotaLimitHeuristics(QuotaLimitHeuristics* heuristics) const override;
 };
 
 class StorageStorageAreaClearFunction : public SettingsFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("storage.clear", STORAGE_CLEAR)
 
  protected:
-  virtual ~StorageStorageAreaClearFunction() {}
+  ~StorageStorageAreaClearFunction() override {}
 
   // SettingsFunction:
-  virtual ResponseValue RunWithStorage(ValueStore* storage) override;
+  ResponseValue RunWithStorage(ValueStore* storage) override;
 
   // ExtensionFunction:
-  virtual void GetQuotaLimitHeuristics(
-      QuotaLimitHeuristics* heuristics) const override;
+  void GetQuotaLimitHeuristics(QuotaLimitHeuristics* heuristics) const override;
 };
 
 class StorageStorageAreaGetBytesInUseFunction : public SettingsFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("storage.getBytesInUse", STORAGE_GETBYTESINUSE)
 
  protected:
-  virtual ~StorageStorageAreaGetBytesInUseFunction() {}
+  ~StorageStorageAreaGetBytesInUseFunction() override {}
 
   // SettingsFunction:
-  virtual ResponseValue RunWithStorage(ValueStore* storage) override;
+  ResponseValue RunWithStorage(ValueStore* storage) override;
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_STORAGE_STORAGE_API_H_