Improve memory estimate of SpdySessionPool in net/ MemoryDumpProvider.

net/spdy/hpack/hpack_static_table.cc

Index: net/spdy/hpack/hpack_static_table.cc
diff --git a/net/spdy/hpack/hpack_static_table.cc b/net/spdy/hpack/hpack_static_table.cc
index 5588ebe183800bbcda42786ea20be6bd9ca1552c..626bd92b01a31d2f953566b609a26ff0ca94b7f7 100644
--- a/net/spdy/hpack/hpack_static_table.cc
+++ b/net/spdy/hpack/hpack_static_table.cc
@@ -7,6 +7,7 @@
 #include "base/logging.h"
 #include "net/spdy/hpack/hpack_constants.h"
 #include "net/spdy/hpack/hpack_entry.h"
+#include "net/spdy/platform/api/spdy_estimate_memory_usage.h"
 
 namespace net {
 
@@ -39,4 +40,10 @@ bool HpackStaticTable::IsInitialized() const {
   return !static_entries_.empty();
 }
 
+size_t HpackStaticTable::EstimateMemoryUsage() const {
+  return SpdyEstimateMemoryUsage(static_entries_) +
+         SpdyEstimateMemoryUsage(static_index_) +
+         SpdyEstimateMemoryUsage(static_name_index_);
+}
+
 }  // namespace net