Reorganize net/disk_cache into backend specific directories.

net/disk_cache/blockfile/index_table_v3.h

Index: net/disk_cache/blockfile/index_table_v3.h
diff --git a/net/disk_cache/v3/index_table.h b/net/disk_cache/blockfile/index_table_v3.h
similarity index 97%
rename from net/disk_cache/v3/index_table.h
rename to net/disk_cache/blockfile/index_table_v3.h
index 5fb398aaee9af903ee9f59a65cc0459bf6c674ad..598aeecf8a7cb72251b1d42f4215393e4ff15867 100644
--- a/net/disk_cache/v3/index_table.h
+++ b/net/disk_cache/blockfile/index_table_v3.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef NET_DISK_CACHE_V3_INDEX_TABLE_H_
-#define NET_DISK_CACHE_V3_INDEX_TABLE_H_
+#ifndef NET_DISK_CACHE_BLOCKFILE_INDEX_TABLE_V3_H_
+#define NET_DISK_CACHE_BLOCKFILE_INDEX_TABLE_V3_H_
 
 // The IndexTable class is in charge of handling all the details about the main
 // index table of the cache. It provides methods to locate entries in the cache,
@@ -25,9 +25,9 @@
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 #include "net/base/net_export.h"
-#include "net/disk_cache/addr.h"
-#include "net/disk_cache/bitmap.h"
-#include "net/disk_cache/v3/disk_format_v3.h"
+#include "net/disk_cache/blockfile/addr.h"
+#include "net/disk_cache/blockfile/bitmap.h"
+#include "net/disk_cache/blockfile/disk_format_v3.h"
 
 namespace net {
 class IOBuffer;
@@ -276,4 +276,4 @@ class NET_EXPORT_PRIVATE IndexTable {
 
 }  // namespace disk_cache
 
-#endif  // NET_DISK_CACHE_V3_INDEX_TABLE_H_
+#endif  // NET_DISK_CACHE_BLOCKFILE_INDEX_TABLE_V3_H_