Update {virtual,override} to follow C++11 style in chrome.

chrome/browser/ui/views/location_bar/star_view_browsertest.cc

Index: chrome/browser/ui/views/location_bar/star_view_browsertest.cc
diff --git a/chrome/browser/ui/views/location_bar/star_view_browsertest.cc b/chrome/browser/ui/views/location_bar/star_view_browsertest.cc
index f5c620dfea4b79cf3f264ac7ca8e69021d13e72c..c0b7b21b05d5a761a3780638be3c7cc92d0d3997 100644
--- a/chrome/browser/ui/views/location_bar/star_view_browsertest.cc
+++ b/chrome/browser/ui/views/location_bar/star_view_browsertest.cc
@@ -73,7 +73,7 @@ class StarViewTestNoDWM : public InProcessBrowserTest {
  public:
   StarViewTestNoDWM() {}
 
-  virtual void SetUpCommandLine(base::CommandLine* command_line) override {
+  void SetUpCommandLine(base::CommandLine* command_line) override {
     command_line->AppendSwitch(switches::kDisableDwmComposition);
   }
 };