Improve memory estimate of SpdySessionPool in net/ MemoryDumpProvider.

net/spdy/spdy_framer_decoder_adapter.h

 // Copyright (c) 2016 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_FRAMER_DECODER_ADAPTER_H_
 #define NET_SPDY_SPDY_FRAMER_DECODER_ADAPTER_H_
 
 #include <stddef.h>
 
 #include <cstdint>
@@ skipping 57 matching lines @@
   virtual SpdyFramer::SpdyState state() const = 0;
 
   // Current error code (NO_ERROR if state != ERROR).
   virtual SpdyFramer::SpdyFramerError spdy_framer_error() const = 0;
 
   // Has any frame header looked like the start of an HTTP/1.1 (or earlier)
   // response? Used to detect if a backend/server that we sent a request to
   // has responded with an HTTP/1.1 (or earlier) response.
   virtual bool probable_http_response() const = 0;
 
+  // Returns the estimate of dynamically allocated memory in bytes.
+  virtual size_t EstimateMemoryUsage() const = 0;
+
  private:
   SpdyFramerVisitorInterface* visitor_ = nullptr;
   SpdyFramerDebugVisitorInterface* debug_visitor_ = nullptr;
   bool process_single_input_frame_ = false;
 };
 
 // Create an instance of NestedSpdyFramerDecoder, which implements
 // SpdyFramerDecoderAdapter, delegating to a SpdyFramer instance that will
 // actually perform the decoding (when requested via ProcessInput). This allows
 // us to test the SpdyFramerDecoderAdapter mechanism without changing the type
@@ skipping 65 matching lines @@
   SpdyFramer* framer() const { return framer_; }
 
  private:
   SpdyFramerVisitorInterface* const visitor_;
   SpdyFramer* const framer_;
 };
 
 }  // namespace net
 
 #endif  // NET_SPDY_SPDY_FRAMER_DECODER_ADAPTER_H_