Improve memory estimate of SpdySessionPool in net/ MemoryDumpProvider.

net/spdy/hpack/hpack_static_table.h

 // Copyright 2014 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_SPDY_HPACK_HPACK_STATIC_TABLE_H_
 #define NET_SPDY_HPACK_HPACK_STATIC_TABLE_H_
 
 #include <stddef.h>
 
 #include "net/base/net_export.h"
@@ skipping 24 matching lines @@
   const HpackHeaderTable::EntryTable& GetStaticEntries() const {
     return static_entries_;
   }
   const HpackHeaderTable::UnorderedEntrySet& GetStaticIndex() const {
     return static_index_;
   }
   const HpackHeaderTable::NameToEntryMap& GetStaticNameIndex() const {
     return static_name_index_;
   }
 
+  // Returns the estimate of dynamically allocated memory in bytes.
+  size_t EstimateMemoryUsage() const;
+
  private:
   HpackHeaderTable::EntryTable static_entries_;
   HpackHeaderTable::UnorderedEntrySet static_index_;
   HpackHeaderTable::NameToEntryMap static_name_index_;
 };
 
 }  // namespace net
 
 #endif  // NET_SPDY_HPACK_HPACK_STATIC_TABLE_H_