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

ppapi/proxy/resource_message_test_sink.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_TEST_SINK_H_
 #define PPAPI_PROXY_RESOURCE_MESSAGE_TEST_SINK_H_
 
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_test_sink.h"
 #include "ppapi/c/pp_stdint.h"
 
 namespace ppapi {
 namespace proxy {
 
 class ResourceMessageCallParams;
 class ResourceMessageReplyParams;
 class SerializedHandle;
 
 // Extends IPC::TestSink to add extra capabilities for searching for and
 // decoding resource messages.
 class ResourceMessageTestSink : public IPC::TestSink {
  public:
   ResourceMessageTestSink();
-  virtual ~ResourceMessageTestSink();
+  ~ResourceMessageTestSink() override;
 
   // IPC::TestSink.
   // Overridden to handle sync messages.
-  virtual bool Send(IPC::Message* msg) override;
+  bool Send(IPC::Message* msg) override;
 
   // Sets the reply message that will be returned to the next sync message sent.
   // This test sink owns any reply messages passed into this method.
   void SetSyncReplyMessage(IPC::Message* reply_msg);
 
   // Searches the queue for the first resource call message with a nested
   // message matching the given ID. On success, returns true and populates the
   // given params and nested message.
   bool GetFirstResourceCallMatching(
       uint32 id,
@@ skipping 36 matching lines @@
 // // Do stuff to send a sync message ...
 // // You can check handler.last_handled_msg() to ensure the correct message was
 // // handled.
 // sink().RemoveFilter(&handler);
 class ResourceSyncCallHandler : public IPC::Listener {
  public:
   ResourceSyncCallHandler(ResourceMessageTestSink* test_sink,
                           uint32 incoming_type,
                           int32_t result,
                           const IPC::Message& reply_msg);
-  virtual ~ResourceSyncCallHandler();
+  ~ResourceSyncCallHandler() override;
 
   // IPC::Listener.
-  virtual bool OnMessageReceived(const IPC::Message& message) override;
+  bool OnMessageReceived(const IPC::Message& message) override;
 
   IPC::Message last_handled_msg() { return last_handled_msg_; }
 
   // Sets a handle to be appended to the ReplyParams. The pointer is owned by
   // the caller.
   void set_serialized_handle(const SerializedHandle* serialized_handle) {
     serialized_handle_ = serialized_handle;
   }
 
  private:
   ResourceMessageTestSink* test_sink_;
   uint32 incoming_type_;
   int32_t result_;
   const SerializedHandle* serialized_handle_;  // Non-owning pointer.
   IPC::Message reply_msg_;
   IPC::Message last_handled_msg_;
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_RESOURCE_MESSAGE_TEST_SINK_H_