Remove stl_util's deletion functions from net/dns/.

net/dns/mojo_host_resolver_impl.h

Index: net/dns/mojo_host_resolver_impl.h
diff --git a/net/dns/mojo_host_resolver_impl.h b/net/dns/mojo_host_resolver_impl.h
index 8c9eb48cc446f4bbed8e83b5aefc4b61ec790007..29795efe1d03591d3c335f7a2eb68d1b735b45a7 100644
--- a/net/dns/mojo_host_resolver_impl.h
+++ b/net/dns/mojo_host_resolver_impl.h
@@ -5,6 +5,7 @@
 #ifndef NET_DNS_MOJO_HOST_RESOLVER_IMPL_H_
 #define NET_DNS_MOJO_HOST_RESOLVER_IMPL_H_
 
+#include <memory>
 #include <set>
 
 #include "base/macros.h"
@@ -47,7 +48,7 @@ class MojoHostResolverImpl {
 
   // All pending jobs, so they can be cancelled when this service is destroyed.
   // Owns all jobs.
-  std::set<Job*> pending_jobs_;
+  std::set<std::unique_ptr<Job>> pending_jobs_;
 
   base::ThreadChecker thread_checker_;