Standardize usage of virtual/override/final in chrome/browser/media

chrome/browser/media/chrome_webrtc_perf_browsertest.cc

Index: chrome/browser/media/chrome_webrtc_perf_browsertest.cc
diff --git a/chrome/browser/media/chrome_webrtc_perf_browsertest.cc b/chrome/browser/media/chrome_webrtc_perf_browsertest.cc
index ed21ee671438a88b89cc48c36e313c46e5836fe8..71d53589b048450cd7b98c1a67f6ea0867f8a7c5 100644
--- a/chrome/browser/media/chrome_webrtc_perf_browsertest.cc
+++ b/chrome/browser/media/chrome_webrtc_perf_browsertest.cc
@@ -33,11 +33,11 @@ static const char kMainWebrtcTestHtmlPage[] =
 // solution (which is only available on WebRTC internal bots).
 class WebRtcPerfBrowserTest : public WebRtcTestBase {
  public:
-  virtual void SetUpInProcessBrowserTestFixture() override {
+  void SetUpInProcessBrowserTestFixture() override {
     DetectErrorsInJavaScript();  // Look for errors in our rather complex js.
   }
 
-  virtual void SetUpCommandLine(CommandLine* command_line) override {
+  void SetUpCommandLine(CommandLine* command_line) override {
     // Ensure the infobar is enabled, since we expect that in this test.
     EXPECT_FALSE(command_line->HasSwitch(switches::kUseFakeUIForMediaStream));