Fixed uncompressing files with wrong uncompressed size set.

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"
@@ skipping 46 matching lines @@
    public:
     EntryInfo(const std::string& filename_in_zip,
               const unz_file_info& raw_file_info);
 
     // Returns the file path. The path is usually relative like
     // "foo/bar.txt", but if it's absolute, is_unsafe() returns true.
     const base::FilePath& file_path() const { return file_path_; }
 
     // Returns the size of the original file (i.e. after uncompressed).
     // Returns 0 if the entry is a directory.
+    // Note: this value should not be trusted, because it is stored as metadata
+    // in the zip archive and can be different from the real uncompressed size.
     int64 original_size() const { return original_size_; }
 
     // Returns the last modified time. If the time stored in the zip file was
     // not valid, the unix epoch will be returned.
     //
     // The time stored in the zip archive uses the MS-DOS date and time format.
     // http://msdn.microsoft.com/en-us/library/ms724247(v=vs.85).aspx
     // As such the following limitations apply:
     // * only years from 1980 to 2107 can be represented.
     // * the time stamp has a 2 second resolution.
@@ skipping 134 matching lines @@
   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_