Improve memory estimate of SpdySessionPool in net/ MemoryDumpProvider.

net/spdy/hpack/hpack_encoder.cc

Index: net/spdy/hpack/hpack_encoder.cc
diff --git a/net/spdy/hpack/hpack_encoder.cc b/net/spdy/hpack/hpack_encoder.cc
index 0ec5e8f67d4a3cdabc71b07f0c86dbeca509a343..9e215160ceeb2fba9cc217178f9d3edabfdb036d 100644
--- a/net/spdy/hpack/hpack_encoder.cc
+++ b/net/spdy/hpack/hpack_encoder.cc
@@ -132,6 +132,11 @@ void HpackEncoder::ApplyHeaderTableSizeSetting(size_t size_setting) {
   should_emit_table_size_ = true;
 }
 
+size_t HpackEncoder::EstimateMemoryUsage() const {
+  // |huffman_table_| is a singleton. It's accounted for in spdy_session_pool.cc
+  return header_table_.size() + output_stream_.size();

[DmitrySkiba, 2017/02/02 18:16:27]

They should both be EMUs - header_table_.size() it doesn't include overhead from
deque / unordered_map, and output_stream_.size() returns buffer's size, not
capacity.

[xunjieli, 2017/02/03 22:25:09]

Done.

+}
+
 void HpackEncoder::EncodeRepresentations(RepresentationIterator* iter,
                                          string* output) {
   MaybeEmitTableSize();