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

ppapi/proxy/resource_message_params.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_RESOURCE_MESSAGE_PARAMS_H_
 #define PPAPI_PROXY_RESOURCE_MESSAGE_PARAMS_H_
 
 #include <vector>
 
 #include "base/memory/ref_counted.h"
@@ skipping 121 matching lines @@
   // const reference. We need to change all the callers and make it not mutable.
   mutable scoped_refptr<SerializedHandles> handles_;
 };
 
 // Parameters common to all ResourceMessage "Call" requests.
 class PPAPI_PROXY_EXPORT ResourceMessageCallParams
     : public ResourceMessageParams {
  public:
   ResourceMessageCallParams();
   ResourceMessageCallParams(PP_Resource resource, int32_t sequence);
-  virtual ~ResourceMessageCallParams();
+  ~ResourceMessageCallParams() override;
 
   void set_has_callback() { has_callback_ = true; }
   bool has_callback() const { return has_callback_; }
 
-  virtual void Serialize(IPC::Message* msg) const override;
-  virtual bool Deserialize(const IPC::Message* msg,
-                           PickleIterator* iter) override;
+  void Serialize(IPC::Message* msg) const override;
+  bool Deserialize(const IPC::Message* msg, PickleIterator* iter) override;
 
  private:
   bool has_callback_;
 };
 
 // Parameters common to all ResourceMessage "Reply" requests.
 class PPAPI_PROXY_EXPORT ResourceMessageReplyParams
     : public ResourceMessageParams {
  public:
   ResourceMessageReplyParams();
   ResourceMessageReplyParams(PP_Resource resource, int32_t sequence);
-  virtual ~ResourceMessageReplyParams();
+  ~ResourceMessageReplyParams() override;
 
   void set_result(int32_t r) { result_ = r; }
   int32_t result() const { return result_; }
 
-  virtual void Serialize(IPC::Message* msg) const override;
-  virtual bool Deserialize(const IPC::Message* msg,
-                           PickleIterator* iter) override;
+  void Serialize(IPC::Message* msg) const override;
+  bool Deserialize(const IPC::Message* msg, PickleIterator* iter) override;
 
   // Writes everything except the handles to |msg|.
   void WriteReplyHeader(IPC::Message* msg) const;
 
  private:
   // Pepper "result code" for the callback.
   int32_t result_;
 };
 
 }  // namespace proxy
@@ skipping 23 matching lines @@
   static bool Read(const Message* m, PickleIterator* iter, param_type* r) {
     return r->Deserialize(m, iter);
   }
   static void Log(const param_type& p, std::string* l) {
   }
 };
 
 }  // namespace IPC
 
 #endif  // PPAPI_PROXY_RESOURCE_MESSAGE_PARAMS_H_