Update from https://crrev.com/309717

crypto/nss_crypto_module_delegate.h

Index: crypto/nss_crypto_module_delegate.h
diff --git a/crypto/nss_crypto_module_delegate.h b/crypto/nss_crypto_module_delegate.h
index 00b2b75335fa05de0f63165b16a9edb89f153dc4..6c1da68161dd5a085d0c82f557a05e3b53d15415 100644
--- a/crypto/nss_crypto_module_delegate.h
+++ b/crypto/nss_crypto_module_delegate.h
@@ -42,7 +42,7 @@ class CryptoModuleBlockingPasswordDelegate {
 // slot in which to act. (Eg, which slot to store a generated key in.)
 class NSSCryptoModuleDelegate : public CryptoModuleBlockingPasswordDelegate {
  public:
-  virtual ~NSSCryptoModuleDelegate() {}
+  ~NSSCryptoModuleDelegate() override {}
 
   // Get the slot to store the generated key.
   virtual ScopedPK11Slot RequestSlot() = 0;