[debug] Revert debug API removal

test/debugger/test-api.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.
 
 "use strict";
 
 // If true, prints all messages sent and received by inspector.
 const printProtocolMessages = false;
 
 // The active wrapper instance.
@@ skipping 12 matching lines @@
     // Each message dispatched by the Debug wrapper is assigned a unique number
     // using nextMessageId.
     this.nextMessageId = 0;
 
     // The listener method called on certain events.
     this.listener = undefined;
 
     // Debug events which can occur in the V8 JavaScript engine.
     this.DebugEvent = { Break: 1,
                         Exception: 2,
-                        AfterCompile: 3,
-                        CompileError: 4,
+                        NewFunction: 3,
+                        BeforeCompile: 4,
+                        AfterCompile: 5,
+                        CompileError: 6,
+                        AsyncTaskEvent: 7
                       };
 
     // The different types of steps.
     this.StepAction = { StepOut: 0,
                         StepNext: 1,
                         StepIn: 2,
                         StepFrame: 3,
                       };
 
     // The different types of scripts matching enum ScriptType in objects.h.
@@ skipping 787 matching lines @@
     debug.instance = new DebugWrapper();
     debug.instance.enable();
   }
   return debug.instance;
 }});
 
 Object.defineProperty(debug, 'ScopeType', { get: function() {
   const instance = debug.Debug;
   return instance.ScopeType;
 }});