Standardize usage of virtual/override/final in components/

components/autofill/core/browser/autofill_download_manager_unittest.cc

Index: components/autofill/core/browser/autofill_download_manager_unittest.cc
diff --git a/components/autofill/core/browser/autofill_download_manager_unittest.cc b/components/autofill/core/browser/autofill_download_manager_unittest.cc
index be1fd622bde54da5d6ec40dae3e06919b0b03f32..5c6268f566e746cd9d04be7a8da4f007b631d0c5 100644
--- a/components/autofill/core/browser/autofill_download_manager_unittest.cc
+++ b/components/autofill/core/browser/autofill_download_manager_unittest.cc
@@ -78,24 +78,22 @@ class AutofillDownloadTest : public AutofillDownloadManager::Observer,
   }
 
   // AutofillDownloadManager::Observer implementation.
-  virtual void OnLoadedServerPredictions(
-      const std::string& response_xml) override {
+  void OnLoadedServerPredictions(const std::string& response_xml) override {
     ResponseData response;
     response.response = response_xml;
     response.type_of_response = QUERY_SUCCESSFULL;
     responses_.push_back(response);
   }
 
-  virtual void OnUploadedPossibleFieldTypes() override {
+  void OnUploadedPossibleFieldTypes() override {
     ResponseData response;
     response.type_of_response = UPLOAD_SUCCESSFULL;
     responses_.push_back(response);
   }
 
-  virtual void OnServerRequestError(
-      const std::string& form_signature,
-      AutofillDownloadManager::RequestType request_type,
-      int http_error) override {
+  void OnServerRequestError(const std::string& form_signature,
+                            AutofillDownloadManager::RequestType request_type,
+                            int http_error) override {
     ResponseData response;
     response.signature = form_signature;
     response.error = http_error;