Standardize usage of virtual/override/final in chrome/browser/sync/

chrome/browser/sync/profile_sync_auth_provider.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 "chrome/browser/sync/profile_sync_auth_provider.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/single_thread_task_runner.h"
 #include "components/signin/core/browser/profile_oauth2_token_service.h"
 #include "google_apis/gaia/gaia_constants.h"
 
 // This is thin proxy class for forwarding calls between sync and UI threads.
 // The main purpose is to hide the fact that ProfileSyncAuthProvider and
 // SyncThreadProxy have independent lifetimes. If ProfileSyncAuthProvider is
 // destroyed first calls to RequestAccessToken will never complete. This is fine
 // since sync thread is not blocked and is in the process of shutdown anyway.
 class ProfileSyncAuthProvider::SyncThreadProxy
     : public syncer::SyncAuthProvider,
       public base::NonThreadSafe {
  public:
   SyncThreadProxy(
       base::WeakPtr<ProfileSyncAuthProvider> provider_impl,
       scoped_refptr<base::SingleThreadTaskRunner> provider_task_runner);
 
   // syncer::SyncAuthProvider implementation.
-  virtual void RequestAccessToken(
-      const RequestTokenCallback& callback) override;
-  virtual void InvalidateAccessToken(const std::string& token) override;
+  void RequestAccessToken(const RequestTokenCallback& callback) override;
+  void InvalidateAccessToken(const std::string& token) override;
 
  private:
   base::WeakPtr<ProfileSyncAuthProvider> provider_impl_;
   scoped_refptr<base::SingleThreadTaskRunner> provider_task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncThreadProxy);
 };
 
 ProfileSyncAuthProvider::SyncThreadProxy::SyncThreadProxy(
     base::WeakPtr<ProfileSyncAuthProvider> provider_impl,
@@ skipping 88 matching lines @@
   token_service_->InvalidateToken(account_id_, oauth2_scope_, token);
 }
 
 scoped_ptr<syncer::SyncAuthProvider>
 ProfileSyncAuthProvider::CreateProviderForSyncThread() {
   DCHECK(CalledOnValidThread());
   scoped_ptr<syncer::SyncAuthProvider> auth_provider(new SyncThreadProxy(
       weak_factory_.GetWeakPtr(), base::MessageLoopProxy::current()));
   return auth_provider.Pass();
 }