Include basic scopes information in 'backtrace' response

src/mirror-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 2214 matching lines @@
     content.line = line;
   }
   var column = mirror.sourceColumn();
   if (!IS_UNDEFINED(column)) {
     content.column = column;
   }
   var source_line_text = mirror.sourceLineText();
   if (!IS_UNDEFINED(source_line_text)) {
     content.sourceLineText = source_line_text;
   }
+  
+  content.scopes = [];
+  for (var i = 0; i < mirror.scopeCount(); i++) {
+    var scope = mirror.scope(i);
+    content.scopes.push({
+      type: scope.scopeType(),
+      index: i
+    });
+  }
 }
 
 
 JSONProtocolSerializer.prototype.serializeScope_ = function(mirror, content) {
   content.index = mirror.scopeIndex();
   content.frameIndex = mirror.frameIndex();
   content.type = mirror.scopeType();
   content.object = this.serializeReference(mirror.scopeObject());
 }
 
@@ skipping 13 matching lines @@
   }
   if (!isFinite(value)) {
     if (value > 0) {
       return 'Infinity';
     } else {
       return '-Infinity';
     }
   }
   return value; 
 }