Should override the virtual destructor.

atom/browser/net/atom_cert_verifier.cc

@@ -50,7 +50,7 @@ class CertVerifierRequest : public AtomCertVerifier::Request {
         first_response_(true),
         weak_ptr_factory_(this) {}
 
-  ~CertVerifierRequest() {
+  ~CertVerifierRequest() override {
     cert_verifier_->RemoveRequest(params_);
     default_verifier_request_.reset();
     while (!response_list_.empty() && !first_response_) {

atom/browser/web_dialog_helper.cc

@@ -51,7 +51,7 @@ class FileSelectHelper : public base::RefCounted<FileSelectHelper>,
  private:
   friend class base::RefCounted<FileSelectHelper>;
 
-  ~FileSelectHelper() {}
+  ~FileSelectHelper() override {}
 
   void OnOpenDialogDone(bool result, const std::vector<base::FilePath>& paths) {
     std::vector<content::FileChooserFileInfo> file_info;