Refactor cache counting into a separate helper class

net/disk_cache/memory/mem_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/memory/mem_entry_impl.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 147 matching lines @@
 Time MemEntryImpl::GetLastModified() const {
   return last_modified_;
 }
 
 int32_t MemEntryImpl::GetDataSize(int index) const {
   if (index < 0 || index >= kNumStreams)
     return 0;
   return data_[index].size();
 }
 
+int64_t MemEntryImpl::GetEntrySize() const {
+  int64_t size = key_.size();
+  for (int i = 0; i < kNumStreams; ++i) {
+    size += GetDataSize(i);
+  }
+  return size;
+}
+
 int MemEntryImpl::ReadData(int index, int offset, IOBuffer* buf, int buf_len,
                            const CompletionCallback& callback) {
   if (net_log_.IsCapturing()) {
     net_log_.BeginEvent(
         net::NetLogEventType::ENTRY_READ_DATA,
         CreateNetLogReadWriteDataCallback(index, offset, buf_len, false));
   }
 
   int result = InternalReadData(index, offset, buf, buf_len);
 
@@ skipping 401 matching lines @@
          scanned_len += first_pos - current_child_offset;
          break;
       }
     }
     scanned_len += kMaxSparseEntrySize - current_child_offset;
   }
   return scanned_len;
 }
 
 }  // namespace disk_cache