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

chrome/browser/ui/extensions/application_launch.cc

Index: chrome/browser/ui/extensions/application_launch.cc
diff --git a/chrome/browser/ui/extensions/application_launch.cc b/chrome/browser/ui/extensions/application_launch.cc
index 74ce425b27a4c7a6b53dae6f9dbbeb69348873bd..8bd010280b84b32e04761a7394eafb32a3581c3c 100644
--- a/chrome/browser/ui/extensions/application_launch.cc
+++ b/chrome/browser/ui/extensions/application_launch.cc
@@ -72,8 +72,7 @@ class EnableViaAppListFlow : public ExtensionEnableFlowDelegate {
         callback_(callback) {
   }
 
-  virtual ~EnableViaAppListFlow() {
-  }
+  ~EnableViaAppListFlow() override {}
 
   void Run() {
     DCHECK(!service_->IsExtensionEnabled(extension_id_));
@@ -90,7 +89,7 @@ class EnableViaAppListFlow : public ExtensionEnableFlowDelegate {
   }
 
   // ExtensionEnableFlowDelegate overrides.
-  virtual void ExtensionEnableFlowFinished() override {
+  void ExtensionEnableFlowFinished() override {
     const Extension* extension =
         service_->GetExtensionById(extension_id_, false);
     if (!extension)
@@ -99,9 +98,7 @@ class EnableViaAppListFlow : public ExtensionEnableFlowDelegate {
     delete this;
   }
 
-  virtual void ExtensionEnableFlowAborted(bool user_initiated) override {
-    delete this;
-  }
+  void ExtensionEnableFlowAborted(bool user_initiated) override { delete this; }
 
   ExtensionService* service_;
   Profile* profile_;