Standardize usage of virtual/override/final specifiers.

chrome/browser/media/chrome_media_stream_infobar_browsertest.cc

 // 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.
 
 #include "base/command_line.h"
 #include "base/files/file_util.h"
 #include "base/path_service.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/infobars/infobar_service.h"
@@ skipping 16 matching lines @@
 #include "content/public/test/browser_test_utils.h"
 #include "media/base/media_switches.h"
 #include "net/test/spawned_test_server/spawned_test_server.h"
 
 
 // MediaStreamInfoBarTest -----------------------------------------------------
 
 class MediaStreamInfoBarTest : public WebRtcTestBase {
  public:
   MediaStreamInfoBarTest() {}
-  virtual ~MediaStreamInfoBarTest() {}
+  ~MediaStreamInfoBarTest() override {}
 
   // InProcessBrowserTest:
   void SetUpCommandLine(CommandLine* command_line) override {
     // This test expects to run with fake devices but real UI.
     command_line->AppendSwitch(switches::kUseFakeDeviceForMediaStream);
     EXPECT_FALSE(command_line->HasSwitch(switches::kUseFakeUIForMediaStream))
         << "Since this test tests the UI we want the real UI!";
   }
 
  protected:
@@ skipping 157 matching lines @@
 IN_PROC_BROWSER_TEST_F(MediaStreamInfoBarTest,
                        DenyingCameraDoesNotCauseStickyDenyForMics) {
   content::WebContents* tab_contents = LoadTestPageInTab();
 
   // If camera blocking also blocked mics, the second call here would hang.
   GetUserMediaWithSpecificConstraintsAndDeny(tab_contents,
                                              kVideoOnlyCallConstraints);
   GetUserMediaWithSpecificConstraintsAndAccept(tab_contents,
                                                kAudioOnlyCallConstraints);
 }