Standardize usage of virtual/override/final in content/

content/child/npapi/npobject_stub.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.
 //
 // A class that receives IPC messages from an NPObjectProxy and calls the real
 // NPObject.
 
 #ifndef CONTENT_CHILD_NPAPI_NPOBJECT_STUB_H_
 #define CONTENT_CHILD_NPAPI_NPOBJECT_STUB_H_
 
@@ skipping 19 matching lines @@
 class NPObjectStub : public IPC::Listener,
                      public IPC::Sender,
                      public base::SupportsWeakPtr<NPObjectStub>,
                      public NPObjectBase {
  public:
   NPObjectStub(NPObject* npobject,
                NPChannelBase* channel,
                int route_id,
                int render_view_id,
                const GURL& page_url);
-  virtual ~NPObjectStub();
+  ~NPObjectStub() override;
 
   // Schedules tear-down of this stub.  The underlying NPObject reference is
   // released, and further invokations from the IPC channel will fail once this
   // call has returned.  Deletion of the stub is deferred to the main loop, in
   // case it is touched as the stack unwinds.  DeleteSoon() is safe to call
   // more than once, until control returns to the main loop.
   void DeleteSoon();
 
   // IPC::Sender implementation:
-  virtual bool Send(IPC::Message* msg) override;
+  bool Send(IPC::Message* msg) override;
 
   // NPObjectBase implementation.
-  virtual NPObject* GetUnderlyingNPObject() override;
-  virtual IPC::Listener* GetChannelListener() override;
+  NPObject* GetUnderlyingNPObject() override;
+  IPC::Listener* GetChannelListener() override;
 
  private:
   // IPC::Listener implementation:
-  virtual bool OnMessageReceived(const IPC::Message& message) override;
-  virtual void OnChannelError() override;
+  bool OnMessageReceived(const IPC::Message& message) override;
+  void OnChannelError() override;
 
   // message handlers
   void OnRelease(IPC::Message* reply_msg);
   void OnHasMethod(const NPIdentifier_Param& name,
                    bool* result);
   void OnInvoke(bool is_default,
                 const NPIdentifier_Param& method,
                 const std::vector<NPVariant_Param>& args,
                 IPC::Message* reply_msg);
   void OnHasProperty(const NPIdentifier_Param& name,
@@ skipping 20 matching lines @@
   int route_id_;
   int render_view_id_;
 
   // The url of the main frame hosting the plugin.
   GURL page_url_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_NPAPI_NPOBJECT_STUB_H_