[Extensions] Clean and update runtime bindings

extensions/renderer/resources/binding.js

 // Copyright 2014 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 Event = require('event_bindings').Event;
 var forEach = require('utils').forEach;
 // Note: Beware sneaky getters/setters when using GetAvailbility(). Use safe/raw
 // variables as arguments.
 var GetAvailability = requireNative('v8_context').GetAvailability;
 var exceptionHandler = require('uncaught_exception_handler');
@@ skipping 217 matching lines @@
   // TODO(kalman/cduvall): Refactor this so |runHooks_| is not needed.
   runHooks_: function(api, schema) {
     $Array.forEach(this.customHooks_, function(hook) {
       if (!isSchemaNodeSupported(schema, platform, manifestVersion))
         return;
 
       if (!hook)
         return;
 
       hook({
+        __proto__: null,
         apiFunctions: this.apiFunctions_,
         schema: schema,
         compiledApi: api
       }, extensionId, contextType);
     }, this);
   },
 
   // Generates the bindings from the schema for |this.apiName_| and integrates
   // any custom bindings that might be present.
   generate: function() {
@@ skipping 319 matching lines @@
                     availability.message);
       return;
     }
 
     this.runHooks_(mod, schema);
     return mod;
   }
 };
 
 exports.$set('Binding', Binding);