Revert 184837

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 DCHECK = requireNative('logging').DCHECK;
 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];
-    DCHECK(request != null);
     if (success) {
       lastError.clear();
     } else {
       if (!error) {
         error = "Unknown error.";
       }
       console.error("Error during " + name + ": " + error);
       lastError.set(error);
     }
 
     if (request.customCallback) {
       var customCallbackArgs = [name, request].concat(responseList);
       request.customCallback.apply(request, customCallbackArgs);
     }
 
     if (request.callback) {
       // Validate callback in debug only -- and only when the
       // caller has provided a callback. Implementations of api
-      // calls may not return data if they observe the caller
+      // calls my not return data if they observe the caller
       // has not provided a callback.
       if (chromeHidden.validateCallbacks && !error) {
         try {
           if (!request.callbackSchema.parameters) {
             throw new Error("No callback schemas defined");
           }
 
           validate(responseList, request.callbackSchema.parameters);
         } catch (exception) {
           return "Callback validation error during " + name + " -- " +
@@ skipping 66 matching lines @@
   var hasCallback = request.callback || optArgs.customCallback;
   return nativeFunction(functionName,
                         requestArgs,
                         requestId,
                         hasCallback,
                         optArgs.forIOThread,
                         optArgs.preserveNullInObjects);
 }
 
 exports.sendRequest = sendRequest;