Improve memory estimate of SpdySessionPool in net/ MemoryDumpProvider.

net/spdy/spdy_stream.h

 // 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.
 
 #ifndef NET_SPDY_SPDY_STREAM_H_
 #define NET_SPDY_SPDY_STREAM_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 354 matching lines @@
   int64_t raw_received_bytes() const { return raw_received_bytes_; }
   int64_t raw_sent_bytes() const { return raw_sent_bytes_; }
   int recv_bytes() const { return recv_bytes_; }
 
   bool GetLoadTimingInfo(LoadTimingInfo* load_timing_info) const;
 
   // Get the URL from the appropriate stream headers, or the empty
   // GURL() if it is unknown.
   const GURL& GetUrlFromHeaders() const { return url_from_header_block_; }
 
+  // Returns the estimate of dynamically allocated memory in bytes.
+  size_t EstimateMemoryUsage() const;
+
  private:
   class HeadersBufferProducer;
 
   // SpdyStream states and transitions are modeled
   // on the HTTP/2 stream state machine. All states and transitions
   // are modeled, with the exceptions of RESERVED_LOCAL (the client
   // cannot initate push streams), and the transition to OPEN due to
   // a remote HEADERS (the client can only initate streams).
   enum State {
     STATE_IDLE,
@@ skipping 133 matching lines @@
   bool write_handler_guard_;
 
   base::WeakPtrFactory<SpdyStream> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SpdyStream);
 };
 
 }  // namespace net
 
 #endif  // NET_SPDY_SPDY_STREAM_H_