Move the chromeHidden.toJSON paranoia out of event.js and into json.js, a new

chrome/renderer/resources/extensions/send_request.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 var chromeHidden = requireNative('chrome_hidden').GetChromeHidden();
+var json = require('json');
 var lastError = require('lastError');
 var natives = requireNative('sendRequest');
 var validate = require('schemaUtils').validate;
 
 // Callback handling.
 var requests = [];
 chromeHidden.handleResponse = function(requestId, name,
                                        success, responseList, error) {
   try {
     var request = requests[requestId];
@@ skipping 70 matching lines @@
 // - forIOThread: true if this function should be handled on the browser IO
 //   thread.
 // - preserveNullInObjects: true if it is safe for null to be in objects.
 function sendRequest(functionName, args, argSchemas, optArgs) {
   if (!optArgs)
     optArgs = {};
   var request = prepareRequest(args, argSchemas);
   if (optArgs.customCallback) {
     request.customCallback = optArgs.customCallback;
   }
-  // JSON.stringify doesn't support a root object which is undefined.
+  // json.stringify doesn't support a root object which is undefined.
   if (request.args === undefined)
     request.args = null;
 
   // TODO(asargent) - convert all optional native functions to accept raw
   // v8 values instead of expecting JSON strings.
   var doStringify = false;
   if (optArgs.nativeFunction && !optArgs.noStringify)
     doStringify = true;
-  var requestArgs = doStringify ?
-      chromeHidden.JSON.stringify(request.args) : request.args;
+  var requestArgs = doStringify ? json.stringify(request.args) : request.args;
   var nativeFunction = optArgs.nativeFunction || natives.StartRequest;
 
   var requestId = natives.GetNextRequestId();
   request.id = requestId;
   requests[requestId] = request;
   var hasCallback = request.callback || optArgs.customCallback;
   return nativeFunction(functionName,
                         requestArgs,
                         requestId,
                         hasCallback,
                         optArgs.forIOThread,
                         optArgs.preserveNullInObjects);
 }
 
 exports.sendRequest = sendRequest;