Reorganize net/disk_cache into backend specific directories.

net/disk_cache/blockfile/sparse_control.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 NET_DISK_CACHE_SPARSE_CONTROL_H_
-#define NET_DISK_CACHE_SPARSE_CONTROL_H_
+#ifndef NET_DISK_CACHE_BLOCKFILE_SPARSE_CONTROL_H_
+#define NET_DISK_CACHE_BLOCKFILE_SPARSE_CONTROL_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "net/base/completion_callback.h"
-#include "net/disk_cache/bitmap.h"
-#include "net/disk_cache/disk_format.h"
+#include "net/disk_cache/blockfile/bitmap.h"
+#include "net/disk_cache/blockfile/disk_format.h"
 
 namespace net {
 class IOBuffer;
 class DrainableIOBuffer;
 }
 
 namespace disk_cache {
 
 class Entry;
 class EntryImpl;
@@ skipping 141 matching lines @@
   int buf_len_;  // Bytes to read or write.
   int child_offset_;  // Offset to use for the current child.
   int child_len_;  // Bytes to read or write for this child.
   int result_;
 
   DISALLOW_COPY_AND_ASSIGN(SparseControl);
 };
 
 }  // namespace disk_cache
 
-#endif  // NET_DISK_CACHE_SPARSE_CONTROL_H_
+#endif  // NET_DISK_CACHE_BLOCKFILE_SPARSE_CONTROL_H_