Remove some PlatformFile uses from zlib

third_party/zlib/google/zip_reader.h

 // Copyright (c) 2011 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 THIRD_PARTY_ZLIB_GOOGLE_ZIP_READER_H_
 #define THIRD_PARTY_ZLIB_GOOGLE_ZIP_READER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/file_util.h"
+#include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
-#include "base/platform_file.h"
 #include "base/time/time.h"
 
 #if defined(USE_SYSTEM_MINIZIP)
 #include <minizip/unzip.h>
 #else
 #include "third_party/zlib/contrib/minizip/unzip.h"
 #endif
 
 namespace zip {
 
@@ skipping 166 matching lines @@
 
  private:
   // Common code used both in Open and OpenFromFd.
   bool OpenInternal();
 
   // Resets the internal state.
   void Reset();
 
   // Extracts a chunk of the file to the target.  Will post a task for the next
   // chunk and success/failure/progress callbacks as necessary.
-  void ExtractChunk(base::PlatformFile target_file,
+  void ExtractChunk(base::File target_file,
                     const SuccessCallback& success_callback,
                     const FailureCallback& failure_callback,
                     const ProgressCallback& progress_callback,
                     const int64 offset);
 
   unzFile zip_file_;
   int num_entries_;
   bool reached_end_;
   scoped_ptr<EntryInfo> current_entry_info_;
 
   base::WeakPtrFactory<ZipReader> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ZipReader);
 };
 
 }  // namespace zip
 
 #endif  // THIRD_PARTY_ZLIB_GOOGLE_ZIP_READER_H_