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

chrome/browser/sync/test/integration/themes_helper.cc

Index: chrome/browser/sync/test/integration/themes_helper.cc
diff --git a/chrome/browser/sync/test/integration/themes_helper.cc b/chrome/browser/sync/test/integration/themes_helper.cc
index db6dc67f27ade01a7cbfa95daca79cfe10e24a2a..324745e4cecbf77533e6996c0186d3cf03540d33 100644
--- a/chrome/browser/sync/test/integration/themes_helper.cc
+++ b/chrome/browser/sync/test/integration/themes_helper.cc
@@ -87,16 +87,16 @@ class ThemePendingInstallChecker : public StatusChangeChecker,
                                    public content::NotificationObserver {
  public:
   ThemePendingInstallChecker(Profile* profile, const std::string& theme);
-  virtual ~ThemePendingInstallChecker();
+  ~ThemePendingInstallChecker() override;
 
   // Implementation of StatusChangeChecker.
-  virtual std::string GetDebugMessage() const override;
-  virtual bool IsExitConditionSatisfied() override;
+  std::string GetDebugMessage() const override;
+  bool IsExitConditionSatisfied() override;
 
   // Implementation of content::NotificationObserver.
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) override;
+  void Observe(int type,
+               const content::NotificationSource& source,
+               const content::NotificationDetails& details) override;
 
   // Waits until the condition to be met or a timeout occurs.
   void Wait();
@@ -167,16 +167,16 @@ class ThemeConditionChecker : public StatusChangeChecker,
   ThemeConditionChecker(Profile* profile,
                         const std::string& debug_message_,
                         base::Callback<bool(ThemeService*)> exit_condition);
-  virtual ~ThemeConditionChecker();
+  ~ThemeConditionChecker() override;
 
   // Implementation of StatusChangeChecker.
-  virtual std::string GetDebugMessage() const override;
-  virtual bool IsExitConditionSatisfied() override;
+  std::string GetDebugMessage() const override;
+  bool IsExitConditionSatisfied() override;
 
   // Implementation of content::NotificationObserver.
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) override;
+  void Observe(int type,
+               const content::NotificationSource& source,
+               const content::NotificationDetails& details) override;
 
   // Waits until the condition to be met or a timeout occurs.
   void Wait();