Standardize usage of virtual/override/final in chrome/

chrome/test/chromedriver/chrome/javascript_dialog_manager_unittest.cc

Index: chrome/test/chromedriver/chrome/javascript_dialog_manager_unittest.cc
diff --git a/chrome/test/chromedriver/chrome/javascript_dialog_manager_unittest.cc b/chrome/test/chromedriver/chrome/javascript_dialog_manager_unittest.cc
index 99666726560ad19a3d29d640aa6cad509fed6f69..69ca375690d5146a77a7c76862cee9b8099caf40 100644
--- a/chrome/test/chromedriver/chrome/javascript_dialog_manager_unittest.cc
+++ b/chrome/test/chromedriver/chrome/javascript_dialog_manager_unittest.cc
@@ -27,10 +27,10 @@ namespace {
 class RecorderDevToolsClient : public StubDevToolsClient {
  public:
   RecorderDevToolsClient() {}
-  virtual ~RecorderDevToolsClient() {}
+  ~RecorderDevToolsClient() override {}
 
   // Overridden from StubDevToolsClient:
-  virtual Status SendCommandAndGetResult(
+  Status SendCommandAndGetResult(
       const std::string& method,
       const base::DictionaryValue& params,
       scoped_ptr<base::DictionaryValue>* result) override {
@@ -99,14 +99,14 @@ namespace {
 class FakeDevToolsClient : public StubDevToolsClient {
  public:
   FakeDevToolsClient() : listener_(NULL), closing_count_(0) {}
-  virtual ~FakeDevToolsClient() {}
+  ~FakeDevToolsClient() override {}
 
   void set_closing_count(int closing_count) {
     closing_count_ = closing_count;
   }
 
   // Overridden from StubDevToolsClient:
-  virtual Status SendCommandAndGetResult(
+  Status SendCommandAndGetResult(
       const std::string& method,
       const base::DictionaryValue& params,
       scoped_ptr<base::DictionaryValue>* result) override {
@@ -120,7 +120,7 @@ class FakeDevToolsClient : public StubDevToolsClient {
     }
     return Status(kOk);
   }
-  virtual void AddListener(DevToolsEventListener* listener) override {
+  void AddListener(DevToolsEventListener* listener) override {
     listener_ = listener;
   }