Migrating test/ppapi_file_system to messaging

tests/ppapi_test_lib/get_browser_interface.cc

 // Copyright (c) 2011 The Native Client 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 "native_client/src/shared/platform/nacl_check.h"
 #include "native_client/tests/ppapi_test_lib/get_browser_interface.h"
 #include "native_client/tests/ppapi_test_lib/internal_utils.h"
 
 #include "ppapi/c/dev/ppb_context_3d_dev.h"
 #include "ppapi/c/dev/ppb_file_io_dev.h"
+#include "ppapi/c/dev/ppb_file_system_dev.h"
 #include "ppapi/c/dev/ppb_scrollbar_dev.h"
 #include "ppapi/c/dev/ppb_surface_3d_dev.h"
 #include "ppapi/c/dev/ppb_var_deprecated.h"
 #include "ppapi/c/ppb_core.h"
 #include "ppapi/c/ppb_graphics_2d.h"
 #include "ppapi/c/ppb_image_data.h"
 #include "ppapi/c/ppb_instance.h"
 #include "ppapi/c/ppb_messaging.h"
 #include "ppapi/c/ppb_url_loader.h"
 #include "ppapi/c/ppb_url_request_info.h"
@@ skipping 61 matching lines @@
 const PPB_Context3D_Dev* PPBContext3DDev() {
   return reinterpret_cast<const PPB_Context3D_Dev*>(
       GetBrowserInterface(PPB_CONTEXT_3D_DEV_INTERFACE));
 }
 
 const PPB_FileIO_Dev* PPBFileIODev() {
   return reinterpret_cast<const PPB_FileIO_Dev*>(
       GetBrowserInterface(PPB_FILEIO_DEV_INTERFACE));
 }
 
+const PPB_FileSystem_Dev* PPBFileSystemDev() {
+  return reinterpret_cast<const PPB_FileSystem_Dev*>(
+      GetBrowserInterface(PPB_FILESYSTEM_DEV_INTERFACE));
+}
+
 const PPB_Scrollbar_Dev* PPBScrollbarDev() {
   return  reinterpret_cast<const PPB_Scrollbar_Dev*>(
       GetBrowserInterface(PPB_SCROLLBAR_DEV_INTERFACE));
 }
 
 const PPB_Surface3D_Dev* PPBSurface3DDev() {
   return  reinterpret_cast<const PPB_Surface3D_Dev*>(
       GetBrowserInterface(PPB_SURFACE_3D_DEV_INTERFACE));
 }