verity: remove the depth parameter from bht_create

file_hasher.h

 // Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 // Use of this source code is governed by the GPL v2 license that can
 // be found in the LICENSE file.
 //
 // Defines FileHasher, a class that creates a Verity-specific file of
 // per-block hashes from a given simple_file::File.
 #ifndef VERITY_FILE_HASHER_H__
 #define VERITY_FILE_HASHER_H__ 1
 
 extern "C" {
@@ skipping 10 matching lines @@
 class FileHasher {
  public:
   FileHasher() : source_(NULL),
                  destination_(NULL),
                  block_limit_(0),
                  alg_(NULL) { }
   // TODO(wad) add initialized_ variable to check.
   virtual ~FileHasher() { dm_bht_destroy(&tree_); }
   virtual bool Initialize(simple_file::File *source,
                           simple_file::File *destination,
-                          unsigned int depth,
                           unsigned int blocks,
                           const char *alg);
   virtual bool Hash();
   virtual bool Store();
   // Print a table to stdout which contains a dmsetup compatible format
   virtual void PrintTable(bool colocated);
 
   static int WriteCallback(void *file,
                            sector_t start,
                            u8 *dst,
                            sector_t count,
                            struct dm_bht_entry *entry);
  private:
   simple_file::File *source_;
   simple_file::File *destination_;
-  unsigned int depth_;
   unsigned int block_limit_;
   const char *alg_;
   struct dm_bht tree_;
 };
 
 }  // namespace verity
 
 #endif   // VERITY_FILE_HASHER_H__