[NaCl SDK] Upate atomic ops in nacl_io

native_client_sdk/src/libraries/nacl_io/mount_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_io/mount_html5fs.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <ppapi/c/pp_completion_callback.h>
@@ skipping 151 matching lines @@
     return 0;
   }
 }
 
 void MountHtml5Fs::Destroy() {
   ppapi_->ReleaseResource(filesystem_resource_);
   pthread_cond_destroy(&filesystem_open_cond_);
 }
 
 Error MountHtml5Fs::BlockUntilFilesystemOpen() {
-  AutoLock lock(&lock_);
+  AUTO_LOCK(filesysem_open_lock_);
   while (!filesystem_open_has_result_) {
-    pthread_cond_wait(&filesystem_open_cond_, &lock_);
+    pthread_cond_wait(&filesystem_open_cond_, filesysem_open_lock_.mutex());
   }
   return filesystem_open_error_;
 }
 
 // static
 void MountHtml5Fs::FilesystemOpenCallbackThunk(void* user_data,
                                                int32_t result) {
   MountHtml5Fs* self = static_cast<MountHtml5Fs*>(user_data);
   self->FilesystemOpenCallback(result);
 }
 
 void MountHtml5Fs::FilesystemOpenCallback(int32_t result) {
-  AutoLock lock(&lock_);
+  AUTO_LOCK(filesysem_open_lock_);
   filesystem_open_has_result_ = true;
   filesystem_open_error_ = PPErrorToErrno(result);
   pthread_cond_signal(&filesystem_open_cond_);
 }