Disable backup connect jobs for all pools except TCPClientSocketPool

net/socket/client_socket_pool_base.h

Index: net/socket/client_socket_pool_base.h
diff --git a/net/socket/client_socket_pool_base.h b/net/socket/client_socket_pool_base.h
index f6041a16653c121f253ef9cab5e6137f415efe11..08fb0f0cca9e69efcdd91b6e7e44191192c0eb4b 100644
--- a/net/socket/client_socket_pool_base.h
+++ b/net/socket/client_socket_pool_base.h
@@ -222,6 +222,8 @@ class ClientSocketPoolBaseHelper
   // sockets that timed out or can't be reused.  Made public for testing.
   void CleanupIdleSockets(bool force);
 
+  void enable_backup_jobs() { backup_jobs_enabled_ = true; };
+
  private:
   friend class base::RefCounted<ClientSocketPoolBaseHelper>;
 
@@ -427,6 +429,9 @@ class ClientSocketPoolBaseHelper
 
   NetworkChangeNotifier* const network_change_notifier_;
 
+  // TODO(vandebo) Remove when backup jobs move to TCPClientSocketPool
+  bool backup_jobs_enabled_;
+
   // A factory to pin the backup_job tasks.
   ScopedRunnableMethodFactory<ClientSocketPoolBaseHelper> method_factory_;
 };
@@ -555,6 +560,8 @@ class ClientSocketPoolBase {
     return helper_->CleanupIdleSockets(force);
   }
 
+  void enable_backup_jobs() { helper_->enable_backup_jobs(); };
+
  private:
   // This adaptor class exists to bridge the
   // internal::ClientSocketPoolBaseHelper::ConnectJobFactory and