Standardize usage of virtual/override/final specifiers.

content/browser/storage_partition_impl_unittest.cc

 // Copyright 2013 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/files/file_util.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/run_loop.h"
 #include "base/threading/thread.h"
 #include "content/browser/browser_thread_impl.h"
 #include "content/browser/gpu/shader_disk_cache.h"
@@ skipping 346 matching lines @@
   StoragePartitionShaderClearTest()
       : thread_bundle_(content::TestBrowserThreadBundle::IO_MAINLOOP),
         browser_context_(new TestBrowserContext()) {
     ShaderCacheFactory::GetInstance()->SetCacheInfo(
         kDefaultClientId,
         BrowserContext::GetDefaultStoragePartition(
             browser_context())->GetPath());
     cache_ = ShaderCacheFactory::GetInstance()->Get(kDefaultClientId);
   }
 
-  virtual ~StoragePartitionShaderClearTest() {
+  ~StoragePartitionShaderClearTest() override {
     cache_ = NULL;
     ShaderCacheFactory::GetInstance()->RemoveCacheInfo(kDefaultClientId);
   }
 
   void InitCache() {
     net::TestCompletionCallback available_cb;
     int rv = cache_->SetAvailableCallback(available_cb.callback());
     ASSERT_EQ(net::OK, available_cb.GetResult(rv));
     EXPECT_EQ(0, cache_->Size());
 
@@ skipping 543 matching lines @@
                  &run_loop));
   run_loop.Run();
 
   // kOrigin1 and kOrigin2 do not have age more than a week.
   EXPECT_FALSE(tester.DOMStorageExistsForOrigin(kOrigin1));
   EXPECT_FALSE(tester.DOMStorageExistsForOrigin(kOrigin2));
   EXPECT_TRUE(tester.DOMStorageExistsForOrigin(kOrigin3));
 }
 
 }  // namespace content