Reorganize net/disk_cache into backend specific directories.

net/disk_cache/blockfile/block_files.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.
 
 // See net/disk_cache/disk_cache.h for the public interface.
 
-#ifndef NET_DISK_CACHE_BLOCK_FILES_H_
-#define NET_DISK_CACHE_BLOCK_FILES_H_
+#ifndef NET_DISK_CACHE_BLOCKFILE_BLOCK_FILES_H_
+#define NET_DISK_CACHE_BLOCKFILE_BLOCK_FILES_H_
 
 #include <vector>
 
 #include "base/files/file_path.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "net/base/net_export.h"
-#include "net/disk_cache/addr.h"
-#include "net/disk_cache/disk_format_base.h"
-#include "net/disk_cache/mapped_file.h"
+#include "net/disk_cache/blockfile/addr.h"
+#include "net/disk_cache/blockfile/disk_format_base.h"
+#include "net/disk_cache/blockfile/mapped_file.h"
 
 namespace base {
 class ThreadChecker;
 }
 
 namespace disk_cache {
 
 // An instance of this class represents the header of a block file in memory.
 // Note that this class doesn't perform any file operation (as in it only deals
 // with entities in memory).
@@ skipping 130 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(DiskCacheTest, BlockFiles_ZeroSizeFile);
   FRIEND_TEST_ALL_PREFIXES(DiskCacheTest, BlockFiles_TruncatedFile);
   FRIEND_TEST_ALL_PREFIXES(DiskCacheTest, BlockFiles_InvalidFile);
   FRIEND_TEST_ALL_PREFIXES(DiskCacheTest, BlockFiles_Stats);
 
   DISALLOW_COPY_AND_ASSIGN(BlockFiles);
 };
 
 }  // namespace disk_cache
 
-#endif  // NET_DISK_CACHE_BLOCK_FILES_H_
+#endif  // NET_DISK_CACHE_BLOCKFILE_BLOCK_FILES_H_