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 717562bae76ea228c0f6f447515b02f85793b137..87cad73982ae27696747cd4729b3885b04d8bb08 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);
   }
 };