Standardize usage of virtual/override/final in sync/

sync/test/fake_server/fake_server_http_post_provider.h

Index: sync/test/fake_server/fake_server_http_post_provider.h
diff --git a/sync/test/fake_server/fake_server_http_post_provider.h b/sync/test/fake_server/fake_server_http_post_provider.h
index 53117c28bf6579cf339ce921e4496ce4d1f72bd5..50d23178eb4b1e8f65e7a4fa567edcc37c1dcb31 100644
--- a/sync/test/fake_server/fake_server_http_post_provider.h
+++ b/sync/test/fake_server/fake_server_http_post_provider.h
@@ -26,21 +26,21 @@ class FakeServerHttpPostProvider
       scoped_refptr<base::SequencedTaskRunner> task_runner);
 
   // HttpPostProviderInterface implementation.
-  virtual void SetExtraRequestHeaders(const char* headers) override;
-  virtual void SetURL(const char* url, int port) override;
-  virtual void SetPostPayload(const char* content_type, int content_length,
-                              const char* content) override;
-  virtual bool MakeSynchronousPost(int* error_code,
-                                   int* response_code) override;
-  virtual void Abort() override;
-  virtual int GetResponseContentLength() const override;
-  virtual const char* GetResponseContent() const override;
-  virtual const std::string GetResponseHeaderValue(
+  void SetExtraRequestHeaders(const char* headers) override;
+  void SetURL(const char* url, int port) override;
+  void SetPostPayload(const char* content_type,
+                      int content_length,
+                      const char* content) override;
+  bool MakeSynchronousPost(int* error_code, int* response_code) override;
+  void Abort() override;
+  int GetResponseContentLength() const override;
+  const char* GetResponseContent() const override;
+  const std::string GetResponseHeaderValue(
       const std::string& name) const override;
 
  protected:
   friend class base::RefCountedThreadSafe<FakeServerHttpPostProvider>;
-  virtual ~FakeServerHttpPostProvider();
+  ~FakeServerHttpPostProvider() override;
 
  private:
   void OnPostComplete(int error_code,
@@ -69,12 +69,12 @@ class FakeServerHttpPostProviderFactory
   FakeServerHttpPostProviderFactory(
       FakeServer* fake_server,
       scoped_refptr<base::SequencedTaskRunner> task_runner);
-  virtual ~FakeServerHttpPostProviderFactory();
+  ~FakeServerHttpPostProviderFactory() override;
 
   // HttpPostProviderFactory:
-  virtual void Init(const std::string& user_agent) override;
-  virtual syncer::HttpPostProviderInterface* Create() override;
-  virtual void Destroy(syncer::HttpPostProviderInterface* http) override;
+  void Init(const std::string& user_agent) override;
+  syncer::HttpPostProviderInterface* Create() override;
+  void Destroy(syncer::HttpPostProviderInterface* http) override;
 
  private:
   FakeServer* const fake_server_;