Disk cache v3 ref2

net/disk_cache/storage_block.h

Index: net/disk_cache/storage_block.h
===================================================================
--- net/disk_cache/storage_block.h	(revision 232523)
+++ net/disk_cache/storage_block.h	(working copy)
@@ -30,6 +30,7 @@
 template<typename T>
 class StorageBlock : public FileBlock {
  public:
+  StorageBlock();
   StorageBlock(MappedFile* file, Addr address);
   virtual ~StorageBlock();
 
@@ -60,12 +61,18 @@
   // Gets a pointer to the internal storage (allocates storage if needed).
   T* Data();
 
+  // Returns the internal storage, if any.
+  T* ReleaseData();
+
   // Returns true if there is data associated with this object.
   bool HasData() const;
 
   // Returns true if the internal hash is correct.
   bool VerifyHash() const;
 
+  // Updates the internal hash value.
+  void UpdateHash();
+
   // Returns true if this object owns the data buffer, false if it is shared.
   bool own_data() const;