[NaCl SDK] Add HTTP mount.

native_client_sdk/src/libraries/nacl_mounts/mount_node_html5fs.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 "nacl_mounts/mount_node_html5fs.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <ppapi/c/pp_completion_callback.h>
@@ skipping 58 matching lines @@
     errno = EINVAL;
     return -1;
   }
 
   // If the buffer is too small, fail
   if (size < sizeof(struct dirent)) {
     errno = EINVAL;
     return -1;
   }
 
-  PP_Resource directory_reader_resource =
-      mount_->ppapi()->GetDirectoryReaderInterface()->Create(fileref_resource_);
-  if (!directory_reader_resource) {
+  ScopedResource directory_reader(
+      mount_->ppapi(),
+      mount_->ppapi()->GetDirectoryReaderInterface()->Create(
+          fileref_resource_));
+  if (!directory_reader.pp_resource()) {
     errno = ENOSYS;
     return -1;
   }
 
-  ScopedResource scoped_directory_reader(
-      mount_->ppapi(),
-      directory_reader_resource,
-      ScopedResource::NoAddRef());
-
   std::vector<struct dirent> dirents;
   PP_DirectoryEntry_Dev directory_entry = {0};
   while (1) {
     int32_t result =
         mount_->ppapi()->GetDirectoryReaderInterface()->GetNextEntry(
-            directory_reader_resource, &directory_entry,
+            directory_reader.pp_resource(), &directory_entry,
             PP_BlockUntilComplete());
     if (result != PP_OK) {
       errno = PPErrorToErrno(result);
       return -1;
     }
 
     // file_ref == 0 is a sentry marking the end of the directory list.
     if (!directory_entry.file_ref)
       break;
 
@@ skipping 140 matching lines @@
   if (fileio_resource_) {
     mount_->ppapi()->GetFileIoInterface()->Close(fileio_resource_);
     mount_->ppapi()->ReleaseResource(fileio_resource_);
   }
 
   mount_->ppapi()->ReleaseResource(fileref_resource_);
   fileio_resource_ = 0;
   fileref_resource_ = 0;
   return 0;
 }