Swap ownership of RulesetService and the content delegate

components/subresource_filter/content/browser/content_ruleset_service_delegate.cc

Index: components/subresource_filter/content/browser/content_ruleset_service_delegate.cc
diff --git a/components/subresource_filter/content/browser/content_ruleset_service_delegate.cc b/components/subresource_filter/content/browser/content_ruleset_service_delegate.cc
index 079798aaf55a1495d57225ad5a9e56eeaea2de73..29c804330e60a21552607405916f138638e684b0 100644
--- a/components/subresource_filter/content/browser/content_ruleset_service_delegate.cc
+++ b/components/subresource_filter/content/browser/content_ruleset_service_delegate.cc
@@ -9,6 +9,7 @@
 #include "base/logging.h"
 #include "base/macros.h"
 #include "components/subresource_filter/content/common/subresource_filter_messages.h"
+#include "components/subresource_filter/core/browser/ruleset_service.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
@@ -81,6 +82,16 @@ void ContentRulesetServiceDelegate::PublishNewRulesetVersion(
     ruleset_published_callback_.Run();
 }
 
+void ContentRulesetServiceDelegate::set_ruleset_service(
+    std::unique_ptr<RulesetService> ruleset_service) {
+  ruleset_service_ = std::move(ruleset_service);
+}
+
+RulesetService* ContentRulesetServiceDelegate::ruleset_service() {
+  DCHECK(ruleset_service_);
+  return ruleset_service_.get();
+}
+
 void ContentRulesetServiceDelegate::Observe(
     int type,
     const content::NotificationSource& source,