Improve memory estimate of SpdySessionPool in net/ MemoryDumpProvider.

net/spdy/spdy_session_pool.cc

Index: net/spdy/spdy_session_pool.cc
diff --git a/net/spdy/spdy_session_pool.cc b/net/spdy/spdy_session_pool.cc
index 1a594d0cb7bda48e16f9926124411e1d5e370a12..972dc32bd355ce12797f7b05e7af5dda0255bcdd 100644
--- a/net/spdy/spdy_session_pool.cc
+++ b/net/spdy/spdy_session_pool.cc
@@ -13,6 +13,7 @@
 #include "base/stl_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/trace_event/memory_allocator_dump.h"
+#include "base/trace_event/memory_usage_estimator.h"
 #include "base/trace_event/process_memory_dump.h"
 #include "base/trace_event/trace_event.h"
 #include "base/values.h"
@@ -23,6 +24,9 @@
 #include "net/log/net_log_event_type.h"
 #include "net/log/net_log_source.h"
 #include "net/log/net_log_with_source.h"
+#include "net/spdy/hpack/hpack_constants.h"
+#include "net/spdy/hpack/hpack_huffman_table.h"
+#include "net/spdy/hpack/hpack_static_table.h"
 #include "net/spdy/spdy_session.h"
 
 namespace net {
@@ -381,14 +385,16 @@ void SpdySessionPool::DumpMemoryStats(
   for (const auto& session : sessions_) {
     StreamSocket::SocketMemoryStats stats;
     bool is_session_active = false;
-    session->DumpMemoryStats(&stats, &is_session_active);
-    total_size += stats.total_size;
+    total_size += session->DumpMemoryStats(&stats, &is_session_active);
     buffer_size += stats.buffer_size;
     cert_count += stats.cert_count;
     serialized_cert_size += stats.serialized_cert_size;
     if (is_session_active)
       num_active_sessions++;
   }
+  total_size +=
+      base::trace_event::EstimateMemoryUsage(ObtainHpackHuffmanTable()) +
+      base::trace_event::EstimateMemoryUsage(ObtainHpackStaticTable());
   base::trace_event::MemoryAllocatorDump* dump =
       pmd->CreateAllocatorDump(base::StringPrintf(
           "%s/spdy_session_pool", parent_dump_absolute_name.c_str()));