Move thread_pool.h into utils so it can be shared by more than one example.

native_client_sdk/src/libraries/nacl_io/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_io/mount_node_html5fs.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <ppapi/c/pp_completion_callback.h>
 #include <ppapi/c/pp_directory_entry.h>
 #include <ppapi/c/pp_errors.h>
 #include <ppapi/c/pp_file_info.h>
 #include <ppapi/c/ppb_file_io.h>
 #include <string.h>
 #include <vector>
 #include "nacl_io/mount.h"
 #include "nacl_io/osdirent.h"
 #include "nacl_io/pepper_interface.h"
-#include "utils/auto_lock.h"
+#include "sdk_util/auto_lock.h"
 
 namespace {
 
 struct OutputBuffer {
   void* data;
   int element_count;
 };
 
 void* GetOutputBuffer(void* user_data, uint32_t count, uint32_t size) {
   OutputBuffer* output = static_cast<OutputBuffer*>(user_data);
@@ skipping 256 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;
   MountNode::Destroy();
 }