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

chrome/browser/signin/signin_browsertest.cc

Index: chrome/browser/signin/signin_browsertest.cc
diff --git a/chrome/browser/signin/signin_browsertest.cc b/chrome/browser/signin/signin_browsertest.cc
index 259bc3caa0d70e9f5ed7e137ecbaf4beac0225f0..b7645c4d3d11ad7c8afeaaba7a31ab2fa15c6abd 100644
--- a/chrome/browser/signin/signin_browsertest.cc
+++ b/chrome/browser/signin/signin_browsertest.cc
@@ -36,7 +36,7 @@ const char kNonSigninURL[] = "http://www.google.com";
 
 class SigninBrowserTest : public InProcessBrowserTest {
  public:
-  virtual void SetUpCommandLine(CommandLine* command_line) override {
+  void SetUpCommandLine(CommandLine* command_line) override {
     https_server_.reset(new net::SpawnedTestServer(
         net::SpawnedTestServer::TYPE_HTTPS,
         net::SpawnedTestServer::kLocalhost,
@@ -183,7 +183,7 @@ class BackOnNTPCommitObserver : public content::WebContentsObserver {
       : content::WebContentsObserver(web_contents) {
   }
 
-  virtual void DidCommitProvisionalLoadForFrame(
+  void DidCommitProvisionalLoadForFrame(
       content::RenderFrameHost* render_frame_host,
       const GURL& url,
       ui::PageTransition transition_type) override {