Implement an IsAllowed function in the pepper PPB_Broker_Trusted API

ppapi/proxy/ppapi_messages.h

 // 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.
 
 // Multiply-included message header, no traditional include guard.
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
@@ skipping 1425 matching lines @@
 
 IPC_SYNC_MESSAGE_CONTROL2_2(PpapiHostMsg_ResourceSyncCall,
     ppapi::proxy::ResourceMessageCallParams /* call_params */,
     IPC::Message /* nested_msg */,
     ppapi::proxy::ResourceMessageReplyParams /* reply_params */,
     IPC::Message /* reply_msg */)
 
 //-----------------------------------------------------------------------------
 // Messages for resources using call/reply above.
 
+// Broker ----------------------------------------------------------------------
+IPC_MESSAGE_CONTROL0(PpapiHostMsg_Broker_Create)
+
+// Queries whether the plugin has permission to connect to the Pepper broker.
+// The response is contained in the error value of the
+// ResourceMessageReplyParams in the reply message.
+IPC_MESSAGE_CONTROL0(PpapiHostMsg_Broker_IsAllowed)
+
 // File chooser.
 IPC_MESSAGE_CONTROL0(PpapiHostMsg_FileChooser_Create)
 IPC_MESSAGE_CONTROL4(PpapiHostMsg_FileChooser_Show,
                      bool /* save_as */,
                      bool /* open_multiple */,
                      std::string /* suggested_file_name */,
                      std::vector<std::string> /* accept_mime_types */)
 IPC_MESSAGE_CONTROL1(PpapiPluginMsg_FileChooser_ShowReply,
                      std::vector<ppapi::PPB_FileRef_CreateInfo> /* files */)
 
@@ skipping 267 matching lines @@
                      std::vector<ppapi::HostResource> /* buffers */,
                      uint32_t /* buffer_size */)
 IPC_MESSAGE_CONTROL1(PpapiPluginMsg_VideoCapture_OnStatus,
                      uint32_t /* status */)
 IPC_MESSAGE_CONTROL1(PpapiPluginMsg_VideoCapture_OnError,
                      uint32_t /* error */)
 IPC_MESSAGE_CONTROL1(PpapiPluginMsg_VideoCapture_OnBufferReady,
                      uint32_t /* buffer */)
 
 #endif  // !defined(OS_NACL) && !defined(NACL_WIN64)