- Remove the legacy debug protocol.

runtime/bin/dbg_connection_macos.h

Index: runtime/bin/dbg_connection_macos.h
diff --git a/runtime/bin/dbg_connection_macos.h b/runtime/bin/dbg_connection_macos.h
deleted file mode 100644
index 064238e59d081659b0b477ca8a13d4984c3642af..0000000000000000000000000000000000000000
--- a/runtime/bin/dbg_connection_macos.h
+++ /dev/null
@@ -1,52 +0,0 @@
-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-#ifndef BIN_DBG_CONNECTION_MACOS_H_
-#define BIN_DBG_CONNECTION_MACOS_H_
-
-#include <arpa/inet.h>
-#include <netdb.h>
-#include <sys/socket.h>
-
-
-namespace dart {
-namespace bin {
-
-class DebuggerConnectionImpl {
- public:
-  static void StartHandler(int port_number);
-  static void StopHandler(intptr_t debug_fd) {}
-  static intptr_t Send(intptr_t socket, const char* buf, int len);
-  static intptr_t Receive(intptr_t socket, char* buf, int len);
-
- private:
-  enum MessageType {
-    kAddDbgFd = 1,
-    kRemoveDbgFd,
-    kQuit
-  };
-
-  struct Message {
-    MessageType msg_id;
-  };
-
-  static void SendMessage(MessageType id);
-  static bool ReceiveMessage(Message* msg);
-
-  static void SetupPollQueue();
-  static void HandleEvent(struct kevent* event);
-  static void Handler(uword args);
-
-
-
-  // File descriptors for pipes used to communicate with the debugger thread.
-  static int wakeup_fds_[2];
-  // File descriptor for the polling queue.
-  static int kqueue_fd_;
-};
-
-}  // namespace bin
-}  // namespace dart
-
-#endif  // BIN_DBG_CONNECTION_MACOS_H_