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

chrome/browser/media/chrome_webrtc_browsertest.cc

Index: chrome/browser/media/chrome_webrtc_browsertest.cc
diff --git a/chrome/browser/media/chrome_webrtc_browsertest.cc b/chrome/browser/media/chrome_webrtc_browsertest.cc
index 8000da00808f42d0f311c952e272a370bdf0b93d..7ec473cc60b561b9dc85d58d04662369e9fce07a 100644
--- a/chrome/browser/media/chrome_webrtc_browsertest.cc
+++ b/chrome/browser/media/chrome_webrtc_browsertest.cc
@@ -24,11 +24,11 @@ static const char kMainWebrtcTestHtmlPage[] =
 // system.
 class WebRtcBrowserTest : 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));