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

chrome/browser/signin/easy_unlock_toggle_flow.cc

Index: chrome/browser/signin/easy_unlock_toggle_flow.cc
diff --git a/chrome/browser/signin/easy_unlock_toggle_flow.cc b/chrome/browser/signin/easy_unlock_toggle_flow.cc
index 0be4333cec7dc0fe25da2f3de62366b727e2ab94..22f20525df0d8d00b1d760be5517dfc9ad18f8f7 100644
--- a/chrome/browser/signin/easy_unlock_toggle_flow.cc
+++ b/chrome/browser/signin/easy_unlock_toggle_flow.cc
@@ -54,14 +54,14 @@ class EasyUnlockToggleFlow::ToggleApiCall : public OAuth2ApiCallFlow {
   ToggleApiCall(EasyUnlockToggleFlow* flow,
                 const std::string& phone_public_key,
                 bool toggle_enable);
-  virtual ~ToggleApiCall();
+  ~ToggleApiCall() override;
 
   // OAuth2ApiCallFlow
-  virtual GURL CreateApiCallUrl() override;
-  virtual std::string CreateApiCallBody() override;
-  virtual std::string CreateApiCallBodyContentType() override;
-  virtual void ProcessApiCallSuccess(const net::URLFetcher* source) override;
-  virtual void ProcessApiCallFailure(const net::URLFetcher* source) override;
+  GURL CreateApiCallUrl() override;
+  std::string CreateApiCallBody() override;
+  std::string CreateApiCallBodyContentType() override;
+  void ProcessApiCallSuccess(const net::URLFetcher* source) override;
+  void ProcessApiCallFailure(const net::URLFetcher* source) override;
 
  private:
   EasyUnlockToggleFlow* flow_;