New disk cache eviction algorithm.

net/disk_cache/entry_impl.h

Index: net/disk_cache/entry_impl.h
===================================================================
--- net/disk_cache/entry_impl.h	(revision 11078)
+++ net/disk_cache/entry_impl.h	(working copy)
@@ -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_ENTRY_IMPL_H__
-#define NET_DISK_CACHE_ENTRY_IMPL_H__
+#ifndef NET_DISK_CACHE_ENTRY_IMPL_H_
+#define NET_DISK_CACHE_ENTRY_IMPL_H_
 
 #include "net/disk_cache/disk_cache.h"
 #include "net/disk_cache/storage_block.h"
@@ -52,9 +52,13 @@
   // Returns true if this entry matches the lookup arguments.
   bool IsSameEntry(const std::string& key, uint32 hash);
 
-  // Permamently destroys this entry
+  // Permamently destroys this entry.
   void InternalDoom();
 
+  // Deletes this entry from disk. If |everything| is false, only the user data
+  // will be removed, leaving the key and control data intact.
+  void DeleteEntryData(bool everything);
+
   // Returns the address of the next entry on the list of entries with the same
   // hash.
   CacheAddr GetNextAddress();
@@ -148,5 +152,5 @@
 
 }  // namespace disk_cache
 
-#endif  // NET_DISK_CACHE_ENTRY_IMPL_H__
+#endif  // NET_DISK_CACHE_ENTRY_IMPL_H_