Improve memory estimate of SpdySessionPool in net/ MemoryDumpProvider.

net/spdy/hpack/hpack_decoder3.cc

 // Copyright 2017 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/spdy/hpack/hpack_decoder3.h"
 
 #include "base/logging.h"
 #include "net/http2/decoder/decode_buffer.h"
 #include "net/http2/decoder/decode_status.h"
+#include "net/spdy/platform/api/spdy_estimate_memory_usage.h"
 
 using base::StringPiece;
 
 namespace net {
 namespace {
 const size_t kMaxDecodeBufferSizeBytes = 32 * 1024;  // 32 KB
 }  // namespace
 
 HpackDecoder3::HpackDecoder3()
     : hpack_decoder_(&listener_adapter_, kMaxDecodeBufferSizeBytes),
@@ skipping 80 matching lines @@
   }
 }
 
 void HpackDecoder3::set_max_decode_buffer_size_bytes(
     size_t max_decode_buffer_size_bytes) {
   DVLOG(2) << "HpackDecoder3::set_max_decode_buffer_size_bytes";
   max_decode_buffer_size_bytes_ = max_decode_buffer_size_bytes;
   hpack_decoder_.set_max_string_size_bytes(max_decode_buffer_size_bytes);
 }
 
+size_t HpackDecoder3::EstimateMemoryUsage() const {
+  return SpdyEstimateMemoryUsage(hpack_decoder_);
+}
+
 HpackDecoder3::ListenerAdapter::ListenerAdapter() : handler_(nullptr) {}
 HpackDecoder3::ListenerAdapter::~ListenerAdapter() {}
 
 void HpackDecoder3::ListenerAdapter::set_handler(
     SpdyHeadersHandlerInterface* handler) {
   handler_ = handler;
 }
 
 void HpackDecoder3::ListenerAdapter::SetHeaderTableDebugVisitor(
     std::unique_ptr<HpackHeaderTable::DebugVisitorInterface> visitor) {
@@ skipping 61 matching lines @@
            << ",  insert_count=" << insert_count
            << ",  time_added=" << time_added;
   if (visitor_ != nullptr) {
     HpackEntry entry(sp.name, sp.value, /*is_static*/ false, insert_count);
     entry.set_time_added(time_added);
     visitor_->OnUseEntry(entry);
   }
 }
 
 }  // namespace net