[debug] Add Eval scope type to inspector protocol

test/debugger/debug/debug-eval-scope.js

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --expose-debug-as debug --no-always-opt
+// Flags: --no-always-opt
 
 // Test that the (strict) eval scope is visible to the debugger.
 
 var Debug = debug.Debug;
 var exception = null;
 var delegate = null;
 
 function listener(event, exec_state, event_data, data) {
   if (event != Debug.DebugEvent.Break) return;
   try {
@@ skipping 119 matching lines @@
 var g = eval("'use strict';              \n" +
              "var a = 1;                 \n" +
              "() => { a;                 \n" +
              "        debugger;          \n" +
              "        assertEquals(3, a);\n" +
              "      }                    \n");
 g();
 
 Debug.setListener(null);
 assertNull(exception);