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

chrome/browser/apps/app_view_browsertest.cc

Index: chrome/browser/apps/app_view_browsertest.cc
diff --git a/chrome/browser/apps/app_view_browsertest.cc b/chrome/browser/apps/app_view_browsertest.cc
index 5be913067449afdf4642354b80669b75b6f53284..2279ed82b4a3f359833968dc9b993bad173dc7d2 100644
--- a/chrome/browser/apps/app_view_browsertest.cc
+++ b/chrome/browser/apps/app_view_browsertest.cc
@@ -36,8 +36,8 @@ class TestGuestViewManager : public extensions::GuestViewManager {
 
  private:
   // GuestViewManager override:
-  virtual void AddGuest(int guest_instance_id,
-                        content::WebContents* guest_web_contents) override{
+  void AddGuest(int guest_instance_id,
+                content::WebContents* guest_web_contents) override {
     extensions::GuestViewManager::AddGuest(
         guest_instance_id, guest_web_contents);
     web_contents_ = guest_web_contents;
@@ -56,9 +56,9 @@ class TestGuestViewManagerFactory : public extensions::GuestViewManagerFactory {
   TestGuestViewManagerFactory() :
       test_guest_view_manager_(NULL) {}
 
-  virtual ~TestGuestViewManagerFactory() {}
+  ~TestGuestViewManagerFactory() override {}
 
-  virtual extensions::GuestViewManager* CreateGuestViewManager(
+  extensions::GuestViewManager* CreateGuestViewManager(
       content::BrowserContext* context) override {
     return GetManager(context);
   }
@@ -131,7 +131,7 @@ class AppViewTest : public extensions::PlatformAppBrowserTest {
   }
 
  private:
-  virtual void SetUpCommandLine(CommandLine* command_line) override {
+  void SetUpCommandLine(CommandLine* command_line) override {
     extensions::PlatformAppBrowserTest::SetUpCommandLine(command_line);
   }