Update {virtual,override} to follow C++11 style in ppapi.

ppapi/proxy/udp_socket_private_resource.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.
 
 #ifndef PPAPI_PROXY_UDP_SOCKET_PRIVATE_RESOURCE_H_
 #define PPAPI_PROXY_UDP_SOCKET_PRIVATE_RESOURCE_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "ppapi/proxy/ppapi_proxy_export.h"
 #include "ppapi/proxy/udp_socket_resource_base.h"
 #include "ppapi/thunk/ppb_udp_socket_private_api.h"
 
 namespace ppapi {
 namespace proxy {
 
 class PPAPI_PROXY_EXPORT UDPSocketPrivateResource
     : public UDPSocketResourceBase,
       public thunk::PPB_UDPSocket_Private_API {
  public:
   UDPSocketPrivateResource(Connection connection, PP_Instance instance);
-  virtual ~UDPSocketPrivateResource();
+  ~UDPSocketPrivateResource() override;
 
   // PluginResource implementation.
-  virtual thunk::PPB_UDPSocket_Private_API*
-      AsPPB_UDPSocket_Private_API() override;
+  thunk::PPB_UDPSocket_Private_API* AsPPB_UDPSocket_Private_API() override;
 
   // PPB_UDPSocket_Private_API implementation.
-  virtual int32_t SetSocketFeature(PP_UDPSocketFeature_Private name,
-                                   PP_Var value) override;
-  virtual int32_t Bind(const PP_NetAddress_Private* addr,
-                       scoped_refptr<TrackedCallback> callback) override;
-  virtual PP_Bool GetBoundAddress(PP_NetAddress_Private* addr) override;
-  virtual int32_t RecvFrom(char* buffer,
-                           int32_t num_bytes,
-                           scoped_refptr<TrackedCallback> callback) override;
-  virtual PP_Bool GetRecvFromAddress(PP_NetAddress_Private* addr) override;
-  virtual int32_t SendTo(const char* buffer,
-                         int32_t num_bytes,
-                         const PP_NetAddress_Private* addr,
-                         scoped_refptr<TrackedCallback> callback) override;
-  virtual void Close() override;
+  int32_t SetSocketFeature(PP_UDPSocketFeature_Private name,
+                           PP_Var value) override;
+  int32_t Bind(const PP_NetAddress_Private* addr,
+               scoped_refptr<TrackedCallback> callback) override;
+  PP_Bool GetBoundAddress(PP_NetAddress_Private* addr) override;
+  int32_t RecvFrom(char* buffer,
+                   int32_t num_bytes,
+                   scoped_refptr<TrackedCallback> callback) override;
+  PP_Bool GetRecvFromAddress(PP_NetAddress_Private* addr) override;
+  int32_t SendTo(const char* buffer,
+                 int32_t num_bytes,
+                 const PP_NetAddress_Private* addr,
+                 scoped_refptr<TrackedCallback> callback) override;
+  void Close() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(UDPSocketPrivateResource);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_UDP_SOCKET_PRIVATE_RESOURCE_H_