Fixes the interactive default browser UX for policy setting

chrome/browser/custom_handlers/protocol_handler_registry.cc

Index: chrome/browser/custom_handlers/protocol_handler_registry.cc
diff --git a/chrome/browser/custom_handlers/protocol_handler_registry.cc b/chrome/browser/custom_handlers/protocol_handler_registry.cc
index edd2b4860f1982c343636bc1bc38b13c5347736b..f36a569bf15a2a68860484f4f9bb7294833bec98 100644
--- a/chrome/browser/custom_handlers/protocol_handler_registry.cc
+++ b/chrome/browser/custom_handlers/protocol_handler_registry.cc
@@ -261,20 +261,11 @@ void ProtocolHandlerRegistry::DefaultClientObserver::SetDefaultWebClientUIState(
   }
 }
 
-bool ProtocolHandlerRegistry::DefaultClientObserver::
-    IsInteractiveSetDefaultPermitted() {
-  return true;
-}
-
 void ProtocolHandlerRegistry::DefaultClientObserver::SetWorker(
     ShellIntegration::DefaultProtocolClientWorker* worker) {
   worker_ = worker;
 }
 
-bool ProtocolHandlerRegistry::DefaultClientObserver::IsOwnedByWorker() {
-  return true;
-}
-
 // Delegate --------------------------------------------------------------------
 
 ProtocolHandlerRegistry::Delegate::~Delegate() {}
@@ -303,7 +294,8 @@ ShellIntegration::DefaultProtocolClientWorker*
 ProtocolHandlerRegistry::Delegate::CreateShellWorker(
     ShellIntegration::DefaultWebClientObserver* observer,
     const std::string& protocol) {
-  return new ShellIntegration::DefaultProtocolClientWorker(observer, protocol);
+  return new ShellIntegration::DefaultProtocolClientWorker(
+      observer, protocol, /*delete_observer=*/true);
 }
 
 ProtocolHandlerRegistry::DefaultClientObserver*