PNaCl: Remove now-unneeded use of nacl::DescWrapper in TempFile

components/nacl/renderer/plugin/temporary_file.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 COMPONENTS_NACL_RENDERER_PLUGIN_TEMPORARY_FILE_H_
 #define COMPONENTS_NACL_RENDERER_PLUGIN_TEMPORARY_FILE_H_
 
 #include <stdint.h>
 
 #include "base/files/file.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "native_client/src/include/nacl_macros.h"
-#include "native_client/src/trusted/desc/nacl_desc_wrapper.h"
 
 #include "ppapi/c/private/pp_file_handle.h"
 
 namespace plugin {
 
 class Plugin;
 
 // Translation creates two temporary files.  The first temporary file holds
 // the object file created by llc.  The second holds the nexe produced by
 // the linker.  Both of these temporary files are used to both write and
@@ skipping 12 matching lines @@
 // (or earlier -- immediately unlinked on POSIX systems).  The file is only
 // opened, once, but because both reading and writing are necessary (and in
 // different processes), the user should reset / seek back to the beginning
 // of the file between sessions.
 class TempFile {
  public:
   // Create a TempFile.
   TempFile(Plugin* plugin, PP_FileHandle handle);
   ~TempFile();
 
-  // Opens a temporary file object and descriptor wrapper referring to the file.
-  // If |writeable| is true, the descriptor will be opened for writing, and
-  // write_wrapper will return a valid pointer, otherwise it will return NULL.
-  int32_t Open(bool writeable);
+  int32_t CheckValidity();
   // Resets file position of the handle, for reuse.
   bool Reset();
 
   // Returns the current size of this file.
   int64_t GetLength();
 
-  // Accessors.
-  // The nacl::DescWrapper* for the writeable version of the file.
-  nacl::DescWrapper* write_wrapper() { return write_wrapper_.get(); }
-  nacl::DescWrapper* read_wrapper() { return read_wrapper_.get(); }
-
-  // Returns a handle to the file, transferring ownership of it.  Note that
-  // the objects returned by write_wrapper() and read_wrapper() remain
-  // valid after TakeFileHandle() is called.
+  // Returns a handle to the file, transferring ownership of it.
   PP_FileHandle TakeFileHandle();
 
   // Returns a handle to the file, without transferring ownership of it.
   // This handle remains valid until the TempFile object is destroyed or
   // TakeFileHandle() is called.
   PP_FileHandle GetFileHandle();
 
  private:
   NACL_DISALLOW_COPY_AND_ASSIGN(TempFile);
 
-  nacl::DescWrapper* MakeDescWrapper(int nacl_file_flags);
-
   Plugin* plugin_;
-  scoped_ptr<nacl::DescWrapper> read_wrapper_;
-  scoped_ptr<nacl::DescWrapper> write_wrapper_;
   base::File file_handle_;
 };
 
 }  // namespace plugin
 
 #endif  // COMPONENTS_NACL_RENDERER_PLUGIN_TEMPORARY_FILE_H_