Disk cache: Remove remaining uses of RankingsNode.pointer....

net/disk_cache/storage_block-inl.h

 // Copyright (c) 2006-2008 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.
 
 #ifndef NET_DISK_CACHE_STORAGE_BLOCK_INL_H_
 #define NET_DISK_CACHE_STORAGE_BLOCK_INL_H_
 
 #include "net/disk_cache/storage_block.h"
 
 #include "base/logging.h"
@@ skipping 54 matching lines @@
 template<typename T> void  StorageBlock<T>::Discard() {
   if (!data_)
     return;
   if (!own_data_) {
     NOTREACHED();
     return;
   }
   DeleteData();
   data_ = NULL;
   modified_ = false;
-  own_data_ = false;
   extended_ = false;
 }
 
+template<typename T> void  StorageBlock<T>::StopSharingData() {
+  if (!data_ || own_data_)
+    return;
+  DCHECK(!modified_);
+  data_ = NULL;
+}
+
 template<typename T> void StorageBlock<T>::set_modified() {
   DCHECK(data_);
   modified_ = true;
 }
 
 template<typename T> T* StorageBlock<T>::Data() {
   if (!data_)
     AllocateData();
   return data_;
 }
 
 template<typename T> bool StorageBlock<T>::HasData() const {
   return (NULL != data_);
 }
 
+template<typename T> bool StorageBlock<T>::own_data() const {
+  return own_data_;
+}
+
 template<typename T> const Addr StorageBlock<T>::address() const {
   return address_;
 }
 
 template<typename T> bool StorageBlock<T>::Load() {
   if (file_) {
     if (!data_)
       AllocateData();
 
     if (file_->Load(this)) {
@@ skipping 37 matching lines @@
       data_->~T();
       delete[] reinterpret_cast<char*>(data_);
     }
     own_data_ = false;
   }
 }
 
 }  // namespace disk_cache
 
 #endif  // NET_DISK_CACHE_STORAGE_BLOCK_INL_H_