Reorganize net/disk_cache into backend specific directories.

net/disk_cache/memory/mem_backend_impl.cc

 // 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.
 
-#include "net/disk_cache/mem_backend_impl.h"
+#include "net/disk_cache/memory/mem_backend_impl.h"
 
 #include "base/logging.h"
 #include "base/sys_info.h"
 #include "net/base/net_errors.h"
 #include "net/disk_cache/cache_util.h"
-#include "net/disk_cache/mem_entry_impl.h"
+#include "net/disk_cache/memory/mem_entry_impl.h"
 
 using base::Time;
 
 namespace {
 
 const int kDefaultInMemoryCacheSize = 10 * 1024 * 1024;
 const int kCleanUpMargin = 1024 * 1024;
 
 int LowWaterAdjust(int high_water) {
   if (high_water < kCleanUpMargin)
@@ skipping 306 matching lines @@
   if (current_size_ > max_size_)
     TrimCache(false);
 }
 
 void MemBackendImpl::SubstractStorageSize(int32 bytes) {
   current_size_ -= bytes;
   DCHECK_GE(current_size_, 0);
 }
 
 }  // namespace disk_cache