internal/debug: APIs for profiling and tracing

The debug package provides an RPC wrapper for glog settings and the
debugging facilities of the Go runtime. They can be triggered through
both command line flags and the IPC listener.

node/node.go

@@ -26,6 +26,7 @@ import (
 	"syscall"
 
 	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/internal/debug"
 	"github.com/ethereum/go-ethereum/p2p"
 	"github.com/ethereum/go-ethereum/rpc"
 )
@@ -284,7 +285,7 @@ func (n *Node) APIs() []rpc.API {
 		}, {
 			Namespace: "debug",
 			Version:   "1.0",
-			Service:   NewPrivateDebugAPI(n),
+			Service:   debug.Handler,
 		}, {
 			Namespace: "debug",
 			Version:   "1.0",