[debug] mark more unused debug API as deprecated.

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 13 matching lines @@
     // using nextMessageId.
     this.nextMessageId = 0;
 
     // The listener method called on certain events.
     this.listener = undefined;
 
     // TODO(jgruber): Determine which of these are still required and possible.
     // Debug events which can occur in the V8 JavaScript engine.
     this.DebugEvent = { Break: 1,
                         Exception: 2,
-                        NewFunction: 3,
-                        BeforeCompile: 4,
-                        AfterCompile: 5,
-                        CompileError: 6,
-                        AsyncTaskEvent: 7
+                        BeforeCompile: 3,
+                        AfterCompile: 4,

[jgruber, 2016/11/24 15:27:03]

We can probably also remove BeforeCompile. And looking at AsyncTaskEvent, I just
noticed the three tests that use it appear to be currently broken.

[Yang, 2016/11/25 08:31:34]

Done.

+                        CompileError: 5,
+                        AsyncTaskEvent: 6
                       };
 
     // 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 785 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;
 }});