[DevTools] Show blocked requests in network log.

Source/devtools/front_end/sdk/NetworkRequest.js

 /*
  * Copyright (C) 2012 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 370 matching lines @@
     },
 
     set canceled(x)
     {
         this._canceled = x;
     },
 
     /**
      * @return {boolean}
      */
+    get blocked()
+    {
+        return this._blocked;
+    },
+
+    set blocked(x)
+    {
+        this._blocked = x;
+    },
+
+    /**
+     * @return {boolean}
+     */
     cached: function()
     {
         return (!!this._fromMemoryCache || !!this._fromDiskCache) && !this._transferSize;
     },
 
     setFromMemoryCache: function()
     {
         this._fromMemoryCache = true;
         delete this._timing;
     },
@@ skipping 697 matching lines @@
         this.dispatchEventToListeners(WebInspector.NetworkRequest.Events.EventSourceMessageAdded, message);
     },
 
     replayXHR: function()
     {
         this.target().networkAgent().replayXHR(this.requestId);
     },
 
     __proto__: WebInspector.SDKObject.prototype
 }