Standardize usage of virtual/override/final specifiers.

extensions/browser/api/storage/settings_quota_unittest.cc

 // 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.
 
 #include "base/json/json_writer.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "extensions/browser/api/storage/settings_storage_quota_enforcer.h"
 #include "extensions/browser/value_store/testing_value_store.h"
@@ skipping 26 matching lines @@
   void ValidateByteValues() {
     std::string validate_sizes;
     base::JSONWriter::Write(byte_value_1_.get(), &validate_sizes);
     ASSERT_EQ(1u, validate_sizes.size());
     base::JSONWriter::Write(byte_value_16_.get(), &validate_sizes);
     ASSERT_EQ(16u, validate_sizes.size());
     base::JSONWriter::Write(byte_value_256_.get(), &validate_sizes);
     ASSERT_EQ(256u, validate_sizes.size());
   }
 
-  virtual void TearDown() override {
-    ASSERT_TRUE(storage_.get() != NULL);
-  }
+  void TearDown() override { ASSERT_TRUE(storage_.get() != NULL); }
 
  protected:
   // Creates |storage_|.  Must only be called once.
   void CreateStorage(
       size_t quota_bytes, size_t quota_bytes_per_item, size_t max_items) {
     ASSERT_TRUE(storage_.get() == NULL);
     SettingsStorageQuotaEnforcer::Limits limits =
         { quota_bytes, quota_bytes_per_item, max_items };
     storage_.reset(new SettingsStorageQuotaEnforcer(limits, delegate_));
   }
@@ skipping 528 matching lines @@
 
   storage_->Set(DEFAULTS, "c", *byte_value_1_);
 
   EXPECT_EQ(6u, storage_->GetBytesInUse());
   EXPECT_EQ(2u, storage_->GetBytesInUse("a"));
   EXPECT_EQ(2u, storage_->GetBytesInUse("b"));
   EXPECT_EQ(4u, storage_->GetBytesInUse(ab));
 }
 
 }  // namespace extensions