Implement an IsAllowed function in the pepper PPB_Broker_Trusted API

chrome/browser/renderer_host/pepper/chrome_browser_pepper_host_factory.cc

 // 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.
 
 #include "chrome/browser/renderer_host/pepper/chrome_browser_pepper_host_factory.h"
 
+#include "chrome/browser/renderer_host/pepper/pepper_broker_host.h"
 #include "chrome/browser/renderer_host/pepper/pepper_flash_device_id_host.h"
 #include "chrome/browser/renderer_host/pepper/pepper_talk_host.h"
 #include "content/public/browser/browser_ppapi_host.h"
 #include "ppapi/host/ppapi_host.h"
 #include "ppapi/host/resource_host.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/shared_impl/ppapi_permissions.h"
 
 using ppapi::host::ResourceHost;
 
@@ skipping 15 matching lines @@
   DCHECK(host == host_->GetPpapiHost());
 
   // Make sure the plugin is giving us a valid instance for this resource.
   if (!host_->IsValidInstance(instance))
     return scoped_ptr<ResourceHost>();
 
   // Private interfaces.
   if (host_->GetPpapiHost()->permissions().HasPermission(
           ppapi::PERMISSION_PRIVATE)) {
     switch (message.type()) {
+      case PpapiHostMsg_Broker_Create::ID:
+        return scoped_ptr<ResourceHost>(new PepperBrokerHost(
+            host_, instance, params.pp_resource()));
       case PpapiHostMsg_FlashDeviceID_Create::ID:
         return scoped_ptr<ResourceHost>(new PepperFlashDeviceIDHost(
             host_, instance, params.pp_resource()));
       case PpapiHostMsg_Talk_Create::ID:
         return scoped_ptr<ResourceHost>(new PepperTalkHost(
             host_, instance, params.pp_resource()));
     }
   }
   return scoped_ptr<ResourceHost>();
 }
 
 }  // namespace chrome