Standardize usage of virtual/override/final in mojo/

mojo/edk/system/data_pipe_producer_dispatcher.h

 // 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.
 
 #ifndef MOJO_EDK_SYSTEM_DATA_PIPE_PRODUCER_DISPATCHER_H_
 #define MOJO_EDK_SYSTEM_DATA_PIPE_PRODUCER_DISPATCHER_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "mojo/edk/system/dispatcher.h"
 #include "mojo/edk/system/system_impl_export.h"
 
 namespace mojo {
 namespace system {
 
 class DataPipe;
 
 // This is the |Dispatcher| implementation for the producer handle for data
 // pipes (created by the Mojo primitive |MojoCreateDataPipe()|). This class is
 // thread-safe.
 class MOJO_SYSTEM_IMPL_EXPORT DataPipeProducerDispatcher : public Dispatcher {
  public:
   DataPipeProducerDispatcher();
 
   // Must be called before any other methods.
   void Init(scoped_refptr<DataPipe> data_pipe);
 
   // |Dispatcher| public methods:
-  virtual Type GetType() const override;
+  Type GetType() const override;
 
  private:
-  virtual ~DataPipeProducerDispatcher();
+  ~DataPipeProducerDispatcher() override;
 
   // |Dispatcher| protected methods:
-  virtual void CancelAllWaitersNoLock() override;
-  virtual void CloseImplNoLock() override;
-  virtual scoped_refptr<Dispatcher>
-  CreateEquivalentDispatcherAndCloseImplNoLock() override;
-  virtual MojoResult WriteDataImplNoLock(UserPointer<const void> elements,
-                                         UserPointer<uint32_t> num_bytes,
-                                         MojoWriteDataFlags flags) override;
-  virtual MojoResult BeginWriteDataImplNoLock(
-      UserPointer<void*> buffer,
-      UserPointer<uint32_t> buffer_num_bytes,
-      MojoWriteDataFlags flags) override;
-  virtual MojoResult EndWriteDataImplNoLock(
-      uint32_t num_bytes_written) override;
-  virtual HandleSignalsState GetHandleSignalsStateImplNoLock() const override;
-  virtual MojoResult AddWaiterImplNoLock(
-      Waiter* waiter,
-      MojoHandleSignals signals,
-      uint32_t context,
-      HandleSignalsState* signals_state) override;
-  virtual void RemoveWaiterImplNoLock(
-      Waiter* waiter,
-      HandleSignalsState* signals_state) override;
-  virtual bool IsBusyNoLock() const override;
+  void CancelAllWaitersNoLock() override;
+  void CloseImplNoLock() override;
+  scoped_refptr<Dispatcher> CreateEquivalentDispatcherAndCloseImplNoLock()
+      override;
+  MojoResult WriteDataImplNoLock(UserPointer<const void> elements,
+                                 UserPointer<uint32_t> num_bytes,
+                                 MojoWriteDataFlags flags) override;
+  MojoResult BeginWriteDataImplNoLock(UserPointer<void*> buffer,
+                                      UserPointer<uint32_t> buffer_num_bytes,
+                                      MojoWriteDataFlags flags) override;
+  MojoResult EndWriteDataImplNoLock(uint32_t num_bytes_written) override;
+  HandleSignalsState GetHandleSignalsStateImplNoLock() const override;
+  MojoResult AddWaiterImplNoLock(Waiter* waiter,
+                                 MojoHandleSignals signals,
+                                 uint32_t context,
+                                 HandleSignalsState* signals_state) override;
+  void RemoveWaiterImplNoLock(Waiter* waiter,
+                              HandleSignalsState* signals_state) override;
+  bool IsBusyNoLock() const override;
 
   // Protected by |lock()|:
   scoped_refptr<DataPipe> data_pipe_;  // This will be null if closed.
 
   DISALLOW_COPY_AND_ASSIGN(DataPipeProducerDispatcher);
 };
 
 }  // namespace system
 }  // namespace mojo
 
 #endif  // MOJO_EDK_SYSTEM_DATA_PIPE_PRODUCER_DISPATCHER_H_