Standardize usage of virtual/override/final specifiers.

remoting/host/linux/x_server_clipboard_unittest.cc

 // 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.
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "remoting/base/constants.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 49 matching lines @@
   XServerClipboard clipboard_;
   Display* display_;
 
   DISALLOW_COPY_AND_ASSIGN(ClipboardTestClient);
 };
 
 }  // namespace
 
 class XServerClipboardTest : public testing::Test {
  public:
-  virtual void SetUp() override {
+  void SetUp() override {
     // XSynchronize() ensures that PumpXEvents() fully processes all X server
     // requests and responses before returning to the caller.
     Display* display1 = XOpenDisplay(NULL);
     XSynchronize(display1, True);
     client1_.Init(display1);
     Display* display2 = XOpenDisplay(NULL);
     XSynchronize(display2, True);
     client2_.Init(display2);
   }
 
-  virtual void TearDown() override {
+  void TearDown() override {
     XCloseDisplay(client1_.display());
     XCloseDisplay(client2_.display());
   }
 
   void PumpXEvents() {
     while (true) {
       if (!client1_.PumpXEvents() && !client2_.PumpXEvents()) {
         break;
       }
     }
@@ skipping 19 matching lines @@
   client2_.SetClipboardData("Text3");
   PumpXEvents();
   EXPECT_EQ("Text3", client1_.clipboard_data());
 
   client2_.SetClipboardData("Text4");
   PumpXEvents();
   EXPECT_EQ("Text4", client1_.clipboard_data());
 }
 
 }  // namespace remoting