Standardize usage of virtual/override/final specifiers.

components/dom_distiller/core/distilled_content_store_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/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "components/dom_distiller/core/article_entry.h"
 #include "components/dom_distiller/core/distilled_content_store.h"
 #include "components/dom_distiller/core/proto/distilled_article.pb.h"
@@ skipping 41 matching lines @@
  public:
   void OnLoadCallback(bool success, scoped_ptr<DistilledArticleProto> proto) {
     load_success_ = success;
     loaded_proto_ = proto.Pass();
   }
 
   void OnSaveCallback(bool success) { save_success_ = success; }
 
  protected:
   // testing::Test implementation:
-  virtual void SetUp() override {
+  void SetUp() override {
     store_.reset(new InMemoryContentStore(kDefaultMaxNumCachedEntries));
     save_success_ = false;
     load_success_ = false;
     loaded_proto_.reset();
   }
 
   scoped_ptr<InMemoryContentStore> store_;
   bool save_success_;
   bool load_success_;
   scoped_ptr<DistilledArticleProto> loaded_proto_;
@@ skipping 251 matching lines @@
 
   // Looking up the first entry by URL should fail when it is not in the cache.
   store_->LoadContent(first_entry_lookup,
                       base::Bind(&InMemoryContentStoreTest::OnLoadCallback,
                                  base::Unretained(this)));
   base::MessageLoop::current()->RunUntilIdle();
   EXPECT_FALSE(load_success_);
 }
 
 }  // namespace dom_distiller