Add an interface for nacl to create delete-on-close temp files,

chrome/browser/nacl_host/pnacl_file_host.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.
 
 #ifndef CHROME_BROWSER_NACL_HOST_PNACL_FILE_HOST_H_
 #define CHROME_BROWSER_NACL_HOST_PNACL_FILE_HOST_H_
 
 #include <string>
 
 class ChromeRenderMessageFilter;
@@ skipping 10 matching lines @@
 // Open a Pnacl file (readonly) on behalf of the NaCl plugin.
 void GetReadonlyPnaclFd(ChromeRenderMessageFilter* chrome_render_message_filter,
                         const std::string& filename,
                         IPC::Message* reply_msg);
 
 // Return true if the filename requested is valid for opening.
 // Sets file_to_open to the FilePath which we will attempt to open.
 bool PnaclCanOpenFile(const std::string& filename,
                       FilePath* file_to_open);
 
+// Creates a temporary file that will be deleted when the last handle
+// is closed, or earlier.
+void CreateTemporaryFile(
+    ChromeRenderMessageFilter* chrome_render_message_filter,
+    IPC::Message* reply_msg);
+
 }  // namespace pnacl_file_host
 
 #endif  // CHROME_BROWSER_NACL_HOST_PNACL_FILE_HOST_H_