Fix a memory leak in BrowsingDataFilterBuilder

chrome/browser/browsing_data/registrable_domain_filter_builder.h

Index: chrome/browser/browsing_data/registrable_domain_filter_builder.h
diff --git a/chrome/browser/browsing_data/registrable_domain_filter_builder.h b/chrome/browser/browsing_data/registrable_domain_filter_builder.h
index 849ff6ced6abe3ce1b1a34c74e6ae566e985e884..3afbb631cf947e266ecffde805f12fd6d090e826 100644
--- a/chrome/browser/browsing_data/registrable_domain_filter_builder.h
+++ b/chrome/browser/browsing_data/registrable_domain_filter_builder.h
@@ -47,7 +47,7 @@ class RegistrableDomainFilterBuilder : public BrowsingDataFilterBuilder {
   // Constructs a filter with the given |mode| - whitelist or blacklist.
   explicit RegistrableDomainFilterBuilder(Mode mode);
 
-  ~RegistrableDomainFilterBuilder();
+  ~RegistrableDomainFilterBuilder() override;
 
   // Adds a registerable domain to the (white- or black-) list. This is expected
   // to not include subdomains, so basically tld+1. This can also be an IP