[Devtools] Fixed frontend to properly support optional requestWillBeSent

third_party/WebKit/Source/devtools/front_end/sdk/NetworkManager.js

 /*
  * Copyright (C) 2011 Google Inc. 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
@@ skipping 308 matching lines @@
       if (!redirectResponse)
         return;
       this.responseReceived(requestId, frameId, loaderId, time, Protocol.Page.ResourceType.Other, redirectResponse);
       networkRequest = this._appendRedirect(requestId, time, request.url);
     } else {
       networkRequest = this._createNetworkRequest(requestId, frameId, loaderId, request.url, documentURL, initiator);
     }
     networkRequest.hasNetworkData = true;
     this._updateNetworkRequestWithRequest(networkRequest, request);
     networkRequest.setIssueTime(time, wallTime);
-    networkRequest.setResourceType(Common.resourceTypes[resourceType]);
+    networkRequest.setResourceType(
+        resourceType ? Common.resourceTypes[resourceType] : Protocol.Page.ResourceType.Other);
 
     this._startNetworkRequest(networkRequest);
   }
 
   /**
    * @override
    * @param {!Protocol.Network.RequestId} requestId
    */
   requestServedFromCache(requestId) {
     var networkRequest = this._inflightRequestsById[requestId];
@@ skipping 546 matching lines @@
 SDK.MultitargetNetworkManager.Events = {
   ConditionsChanged: Symbol('ConditionsChanged'),
   UserAgentChanged: Symbol('UserAgentChanged')
 };
 
 
 /**
  * @type {!SDK.MultitargetNetworkManager}
  */
 SDK.multitargetNetworkManager;