Remove the mutation functions interfaces from URLRequestJobFactory.

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 be39398bf7d39edf9f766fa5ce3728cbed8b01db..3f85f8eb9f90bee071cfacb1d9cf154b44697e20 100644
--- a/chrome/browser/custom_handlers/protocol_handler_registry.cc
+++ b/chrome/browser/custom_handlers/protocol_handler_registry.cc
@@ -175,16 +175,6 @@ void ProtocolHandlerRegistry::JobInterceptorFactory::Chain(
   job_factory_ = job_factory.Pass();
 }
 
-bool ProtocolHandlerRegistry::JobInterceptorFactory::SetProtocolHandler(
-    const std::string& scheme, ProtocolHandler* protocol_handler) {
-  return job_factory_->SetProtocolHandler(scheme, protocol_handler);
-}
-
-void ProtocolHandlerRegistry::JobInterceptorFactory::AddInterceptor(
-    Interceptor* interceptor) {
-  return job_factory_->AddInterceptor(interceptor);
-}
-
 net::URLRequestJob*
 ProtocolHandlerRegistry::JobInterceptorFactory::MaybeCreateJobWithInterceptor(
     net::URLRequest* request, net::NetworkDelegate* network_delegate) const {