Standardize usage of virtual/override/final in chrome/

chrome/test/chromedriver/chrome/chrome_desktop_impl.h

Index: chrome/test/chromedriver/chrome/chrome_desktop_impl.h
diff --git a/chrome/test/chromedriver/chrome/chrome_desktop_impl.h b/chrome/test/chromedriver/chrome/chrome_desktop_impl.h
index 8a973dc570aec58c5474d66f8813f381ff814bad..77784838c993a3a06b5614d30e25c5ecbea47470 100644
--- a/chrome/test/chromedriver/chrome/chrome_desktop_impl.h
+++ b/chrome/test/chromedriver/chrome/chrome_desktop_impl.h
@@ -35,7 +35,7 @@ class ChromeDesktopImpl : public ChromeImpl {
       const base::CommandLine& command,
       base::ScopedTempDir* user_data_dir,
       base::ScopedTempDir* extension_dir);
-  virtual ~ChromeDesktopImpl();
+  ~ChromeDesktopImpl() override;
 
   // Waits for a page with the given URL to appear and finish loading.
   // Returns an error if the timeout is exceeded.
@@ -47,12 +47,12 @@ class ChromeDesktopImpl : public ChromeImpl {
   Status GetAutomationExtension(AutomationExtension** extension);
 
   // Overridden from Chrome:
-  virtual ChromeDesktopImpl* GetAsDesktop() override;
-  virtual std::string GetOperatingSystemName() override;
+  ChromeDesktopImpl* GetAsDesktop() override;
+  std::string GetOperatingSystemName() override;
 
   // Overridden from ChromeImpl:
-  virtual bool IsMobileEmulationEnabled() const override;
-  virtual Status QuitImpl() override;
+  bool IsMobileEmulationEnabled() const override;
+  Status QuitImpl() override;
 
   const base::CommandLine& command() const;