Add a size estimation mechanism to StoragePartitionHttpCacheDataRemover.

net/disk_cache/blockfile/entry_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/blockfile/entry_impl.h"
 
 #include "base/hash.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_util.h"
 #include "net/base/io_buffer.h"
@@ skipping 790 matching lines @@
 }
 
 int32 EntryImpl::GetDataSize(int index) const {
   if (index < 0 || index >= kNumStreams)
     return 0;
 
   CacheEntryBlock* entry = const_cast<CacheEntryBlock*>(&entry_);
   return entry->Data()->data_size[index];
 }
 
+int EntryImpl::GetEntrySize() const {
+  int result = 0;
+  for (int i = 0; i < kNumStreams; ++i) {
+    result += GetDataSize(i);
+  }
+  return result;
+}
+
 int EntryImpl::ReadData(int index, int offset, IOBuffer* buf, int buf_len,
                         const CompletionCallback& callback) {
   if (callback.is_null())
     return ReadDataImpl(index, offset, buf, buf_len, callback);
 
   DCHECK(node_.Data()->dirty || read_only_);
   if (index < 0 || index >= kNumStreams)
     return net::ERR_INVALID_ARGUMENT;
 
   int entry_size = entry_.Data()->data_size[index];
@@ skipping 723 matching lines @@
   Trace("%s 0x%p 0x%x 0x%x", msg, reinterpret_cast<void*>(this),
         entry_.address().value(), node_.address().value());
 
   Trace("  data: 0x%x 0x%x 0x%x", entry_.Data()->data_addr[0],
         entry_.Data()->data_addr[1], entry_.Data()->long_key);
 
   Trace("  doomed: %d 0x%x", doomed_, dirty);
 }
 
 }  // namespace disk_cache