Standardize usage of virtual/override/final specifiers.

content/browser/quota/usage_tracker_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/bind.h"
 #include "base/run_loop.h"
 #include "content/public/test/mock_special_storage_policy.h"
 #include "net/base/net_util.h"
 #include "storage/browser/quota/usage_tracker.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 112 matching lines @@
 };
 
 class UsageTrackerTest : public testing::Test {
  public:
   UsageTrackerTest()
       : storage_policy_(new MockSpecialStoragePolicy()),
         usage_tracker_(GetUsageTrackerList(), kStorageTypeTemporary,
                        storage_policy_.get(), NULL) {
   }
 
-  virtual ~UsageTrackerTest() {}
+  ~UsageTrackerTest() override {}
 
   UsageTracker* usage_tracker() {
     return &usage_tracker_;
   }
 
   void UpdateUsage(const GURL& origin, int64 delta) {
     quota_client_.UpdateUsage(origin, delta);
     usage_tracker_.UpdateUsageCache(quota_client_.id(), origin, delta);
     base::RunLoop().RunUntilIdle();
   }
@@ skipping 181 matching lines @@
 
   GetGlobalLimitedUsage(&limited_usage);
   GetGlobalUsage(&total_usage, &unlimited_usage);
   EXPECT_EQ(1 + 16, limited_usage);
   EXPECT_EQ(1 + 2 + 16 + 32, total_usage);
   EXPECT_EQ(2 + 32, unlimited_usage);
 }
 
 
 }  // namespace content