- Remove the legacy debug protocol.

tests/standalone/debugger/closure_bp_test.dart

-// Copyright (c) 2013, 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.
-
-// This test forks a second vm process that runs this dart script as
-// a debug target.
-// Run this test with option --wire to see the json messages sent
-// between the processes.
-// Run this test with option --verbose to see the stdout and stderr output
-// of the debug target process.
-
-import "debug_lib.dart";
-
-bar(x) {
-  print(x);
-}
-
-main(List<String> arguments) {
-  if (RunScript(testScript, arguments)) return;
-  print("Hello from debuggee");
-  [1,2].forEach(bar);  // Causes implicit closure of bar to be compiled.
-  print("stop here");  // Stop here and set breakpoint in bar.
-  [3,4].forEach(bar);  // Call bar closure and observe breakpoints being hit.
-  print("done");
-}
-
-
-// Expected debugger events and commands.
-var testScript = [
-  MatchFrame(0, "main"),  // Top frame in trace is function "main".
-  SetBreakpoint(22),      // Set breakpoint a line 22, after bar closure is compiled.
-  Resume(),
-  MatchFrame(0, "main"),  // Should be at line 22 in main.
-  MatchLine(22),
-  SetBreakpoint(15),      // Set breakpoint in function bar. Bar has not been called
-                          // through a regular function call at this point, only
-                          // through a closure from forEach().
-  Resume(),
-  MatchFrames(["bar", "forEach", "main"]),  // Should be in closure function now.
-  MatchLine(15),
-  MatchLocals({"x": "3"}),
-  Resume(),
-  MatchFrames(["bar", "forEach", "main"]),  // Should be in closure function now.
-  MatchLine(15),
-  MatchLocals({"x": "4"}),
-  Resume(),
-];