Implement an IsAllowed function in the pepper PPB_Broker_Trusted API

ppapi/proxy/ppb_instance_proxy.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 "ppapi/proxy/ppb_instance_proxy.h"
 
 #include "base/memory/ref_counted.h"
 #include "build/build_config.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/pp_time.h"
 #include "ppapi/c/pp_var.h"
 #include "ppapi/c/ppb_audio_config.h"
 #include "ppapi/c/ppb_instance.h"
 #include "ppapi/c/ppb_messaging.h"
 #include "ppapi/c/ppb_mouse_lock.h"
 #include "ppapi/c/private/pp_content_decryptor.h"
+#include "ppapi/proxy/broker_resource.h"
 #include "ppapi/proxy/content_decryptor_private_serializer.h"
 #include "ppapi/proxy/enter_proxy.h"
 #include "ppapi/proxy/flash_clipboard_resource.h"
 #include "ppapi/proxy/flash_file_resource.h"
 #include "ppapi/proxy/flash_fullscreen_resource.h"
 #include "ppapi/proxy/flash_resource.h"
 #include "ppapi/proxy/gamepad_resource.h"
 #include "ppapi/proxy/host_dispatcher.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/ppapi_messages.h"
@@ skipping 338 matching lines @@
 
   InstanceData::SingletonResourceMap::iterator it =
       data->singleton_resources.find(id);
   if (it != data->singleton_resources.end())
     return it->second.get();
 
   scoped_refptr<Resource> new_singleton;
   Connection connection(PluginGlobals::Get()->GetBrowserSender(), dispatcher());
 
   switch (id) {
+    case BROKER_SINGLETON_ID:
+      new_singleton = new BrokerResource(connection, instance);
+      break;
     case GAMEPAD_SINGLETON_ID:
       new_singleton = new GamepadResource(connection, instance);
       break;
 // Flash resources aren't needed for NaCl.
 #if !defined(OS_NACL) && !defined(NACL_WIN64)
     case FLASH_CLIPBOARD_SINGLETON_ID:
       new_singleton = new FlashClipboardResource(connection, instance);
       break;
     case FLASH_FILE_SINGLETON_ID:
       new_singleton = new FlashFileResource(connection, instance);
@@ skipping 874 matching lines @@
     PP_Instance instance) {
   InstanceData* data = static_cast<PluginDispatcher*>(dispatcher())->
       GetInstanceData(instance);
   if (!data)
     return;  // Instance was probably deleted.
   data->should_do_request_surrounding_text = false;
 }
 
 }  // namespace proxy
 }  // namespace ppapi