Standardize usage of virtual/override/final in extensions/

extensions/browser/value_store/testing_value_store.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_VALUE_STORE_TESTING_VALUE_STORE_H_
 #define EXTENSIONS_BROWSER_VALUE_STORE_TESTING_VALUE_STORE_H_
 
 #include "base/compiler_specific.h"
 #include "extensions/browser/value_store/value_store.h"
 
 // ValueStore for testing, with an in-memory storage but the ability to
 // optionally fail all operations.
 class TestingValueStore : public ValueStore {
  public:
   TestingValueStore();
-  virtual ~TestingValueStore();
+  ~TestingValueStore() override;
 
   // Sets the error code for requests. If OK, errors won't be thrown.
   // Defaults to OK.
   void set_error_code(ErrorCode error_code) { error_code_ = error_code; }
 
   // Accessors for the number of reads/writes done by this value store. Each
   // Get* operation (except for the BytesInUse ones) counts as one read, and
   // each Set*/Remove/Clear operation counts as one write. This is useful in
   // tests seeking to assert that some number of reads/writes to their
   // underlying value store have (or have not) happened.
   int read_count() { return read_count_; }
   int write_count() { return write_count_; }
 
   // ValueStore implementation.
-  virtual size_t GetBytesInUse(const std::string& key) override;
-  virtual size_t GetBytesInUse(const std::vector<std::string>& keys) override;
-  virtual size_t GetBytesInUse() override;
-  virtual ReadResult Get(const std::string& key) override;
-  virtual ReadResult Get(const std::vector<std::string>& keys) override;
-  virtual ReadResult Get() override;
-  virtual WriteResult Set(
-      WriteOptions options,
-      const std::string& key,
-      const base::Value& value) override;
-  virtual WriteResult Set(
-      WriteOptions options, const base::DictionaryValue& values) override;
-  virtual WriteResult Remove(const std::string& key) override;
-  virtual WriteResult Remove(const std::vector<std::string>& keys) override;
-  virtual WriteResult Clear() override;
+  size_t GetBytesInUse(const std::string& key) override;
+  size_t GetBytesInUse(const std::vector<std::string>& keys) override;
+  size_t GetBytesInUse() override;
+  ReadResult Get(const std::string& key) override;
+  ReadResult Get(const std::vector<std::string>& keys) override;
+  ReadResult Get() override;
+  WriteResult Set(WriteOptions options,
+                  const std::string& key,
+                  const base::Value& value) override;
+  WriteResult Set(WriteOptions options,
+                  const base::DictionaryValue& values) override;
+  WriteResult Remove(const std::string& key) override;
+  WriteResult Remove(const std::vector<std::string>& keys) override;
+  WriteResult Clear() override;
   // TestingValueStores can't get corrupted (they're all in-memory), so these
   // just return true.
-  virtual bool Restore() override;
-  virtual bool RestoreKey(const std::string& key) override;
+  bool Restore() override;
+  bool RestoreKey(const std::string& key) override;
 
  private:
   scoped_ptr<ValueStore::Error> TestingError();
 
   base::DictionaryValue storage_;
   int read_count_;
   int write_count_;
   ErrorCode error_code_;
 
   DISALLOW_COPY_AND_ASSIGN(TestingValueStore);
 };
 
 #endif  // EXTENSIONS_BROWSER_VALUE_STORE_TESTING_VALUE_STORE_H_