Improve memory estimate of SpdySessionPool in net/ MemoryDumpProvider.

net/spdy/spdy_framer.cc

Index: net/spdy/spdy_framer.cc
diff --git a/net/spdy/spdy_framer.cc b/net/spdy/spdy_framer.cc
index 89b607aded94d30d3aa8c0b562b9f9acc3041527..37c1181a1649a1e04d5c46cae36cfb20f6c695d4 100644
--- a/net/spdy/spdy_framer.cc
+++ b/net/spdy/spdy_framer.cc
@@ -21,6 +21,7 @@
 #include "base/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/string_util.h"
+#include "base/trace_event/memory_usage_estimator.h"
 #include "net/quic/core/quic_flags.h"
 #include "net/spdy/hpack/hpack_constants.h"
 #include "net/spdy/hpack/hpack_decoder.h"
@@ -562,6 +563,10 @@ void SpdyFramer::CharBuffer::Rewind() {
   len_ = 0;
 }
 
+size_t SpdyFramer::CharBuffer::EstimateMemoryUsage() const {
+  return capacity_;
+}
+
 SpdyFramer::SpdySettingsScratch::SpdySettingsScratch()
     : buffer(8), last_setting_id(-1) {}
 
@@ -570,6 +575,10 @@ void SpdyFramer::SpdySettingsScratch::Reset() {
   last_setting_id = -1;
 }
 
+size_t SpdyFramer::SpdySettingsScratch::EstimateMemoryUsage() const {
+  return base::trace_event::EstimateMemoryUsage(buffer);
+}
+
 SpdyFrameType SpdyFramer::ValidateFrameHeader(bool is_control_frame,
                                               int frame_type_field,
                                               size_t payload_length_field) {
@@ -2351,6 +2360,15 @@ void SpdyFramer::SetEncoderHeaderTableDebugVisitor(
   GetHpackEncoder()->SetHeaderTableDebugVisitor(std::move(visitor));
 }
 
+size_t SpdyFramer::EstimateMemoryUsage() const {
+  return base::trace_event::EstimateMemoryUsage(current_frame_buffer_) +
+         base::trace_event::EstimateMemoryUsage(settings_scratch_) +
+         base::trace_event::EstimateMemoryUsage(altsvc_scratch_) +
+         base::trace_event::EstimateMemoryUsage(hpack_encoder_) +
+         base::trace_event::EstimateMemoryUsage(hpack_decoder_) +
+         base::trace_event::EstimateMemoryUsage(decoder_adapter_);
+}
+
 void SpdyFramer::UpdateHeaderEncoderTableSize(uint32_t value) {
   GetHpackEncoder()->ApplyHeaderTableSizeSetting(value);
 }