Standardize usage of virtual/override/final in sync/

sync/test/engine/mock_connection_manager.h

 // Copyright (c) 2012 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.
 //
 // Mock ServerConnectionManager class for use in client unit tests.
 
 #ifndef SYNC_TEST_ENGINE_MOCK_CONNECTION_MANAGER_H_
 #define SYNC_TEST_ENGINE_MOCK_CONNECTION_MANAGER_H_
 
 #include <bitset>
@@ skipping 17 matching lines @@
   class MidCommitObserver {
    public:
     virtual void Observe() = 0;
 
    protected:
     virtual ~MidCommitObserver() {}
   };
 
   MockConnectionManager(syncable::Directory*,
                         CancelationSignal* signal);
-  virtual ~MockConnectionManager();
+  ~MockConnectionManager() override;
 
   // Overridden ServerConnectionManager functions.
-  virtual bool PostBufferToPath(
-      PostBufferParams*,
-      const std::string& path,
-      const std::string& auth_token,
-      ScopedServerStatusWatcher* watcher) override;
+  bool PostBufferToPath(PostBufferParams*,
+                        const std::string& path,
+                        const std::string& auth_token,
+                        ScopedServerStatusWatcher* watcher) override;
 
   // Control of commit response.
   // NOTE: Commit callback is invoked only once then reset.
   void SetMidCommitCallback(const base::Closure& callback);
   void SetMidCommitObserver(MidCommitObserver* observer);
 
   // Set this if you want commit to perform commit time rename. Will request
   // that the client renames all commited entries, prepending this string.
   void SetCommitTimeRename(std::string prepend);
 
@@ skipping 341 matching lines @@
   std::string next_token_;
 
   std::vector<sync_pb::ClientToServerMessage> requests_;
 
   DISALLOW_COPY_AND_ASSIGN(MockConnectionManager);
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_TEST_ENGINE_MOCK_CONNECTION_MANAGER_H_