Add "Version" command

src/debug-delay.js

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1225 matching lines @@
       } else if (request.command == 'references') {
         this.referencesRequest_(request, response);
       } else if (request.command == 'source') {
         this.sourceRequest_(request, response);
       } else if (request.command == 'scripts') {
         this.scriptsRequest_(request, response);
       } else if (request.command == 'threads') {
         this.threadsRequest_(request, response);
       } else if (request.command == 'suspend') {
         this.suspendRequest_(request, response);
+      } else if (request.command == 'version') {
+        this.versionRequest_(request, response);
       } else {
         throw new Error('Unknown command "' + request.command + '" in request');
       }
     } catch (e) {
       // If there is no response object created one (without command).
       if (!response) {
         response = this.createResponse();
       }
       response.success = false;
       response.message = %ToString(e);
@@ skipping 648 matching lines @@
 
   // Create the response body.
   response.body = {
     totalThreads: total_threads,
     threads: threads
   }
 };
 
 
 DebugCommandProcessor.prototype.suspendRequest_ = function(request, response) {
-  // TODO(peter.rybin): probably we need some body field here.
   response.running = false;
 };
 
 
+DebugCommandProcessor.prototype.versionRequest_ = function(request, response) {
+  response.body = {
+    V8Version: %GetV8Version()
+  }
+};
+
+
 // Check whether the previously processed command caused the VM to become
 // running.
 DebugCommandProcessor.prototype.isRunning = function() {
   return this.running_;
 }
 
 
 DebugCommandProcessor.prototype.systemBreak = function(cmd, args) {
   return %SystemBreak();
 };
@@ skipping 106 matching lines @@
     case 'string':
     case 'number':
       json = value;
       break
 
     default:
       json = null;
   }
   return json;
 }