Instrument SourceStream using MemoryDumpProvider

net/filter/filter_source_stream.cc

 // Copyright 2016 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/filter/filter_source_stream.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/logging.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 49 matching lines @@
   return rv;
 }
 
 std::string FilterSourceStream::Description() const {
   std::string next_type_string = upstream_->Description();
   if (next_type_string.empty())
     return GetTypeAsString();
   return next_type_string + "," + GetTypeAsString();
 }
 
+void FilterSourceStream::DumpMemoryStats(
+    base::trace_event::ProcessMemoryDump* pmd,
+    const std::string& parent_dump_absolute_name) const {
+  DumpMemoryStatsImpl(pmd, parent_dump_absolute_name);
+  upstream_->DumpMemoryStats(pmd, parent_dump_absolute_name);
+}
+
 int FilterSourceStream::DoLoop(int result) {
   DCHECK_NE(STATE_NONE, next_state_);
 
   int rv = result;
   do {
     State state = next_state_;
     next_state_ = STATE_NONE;
     switch (state) {
       case STATE_READ_DATA:
         rv = DoReadData();
@@ skipping 86 matching lines @@
   output_buffer_ = nullptr;
   output_buffer_size_ = 0;
 
   base::ResetAndReturn(&callback_).Run(rv);
 }
 
 bool FilterSourceStream::NeedMoreData() const {
   return !upstream_end_reached_;
 }
 
+void FilterSourceStream::DumpMemoryStatsImpl(
+    base::trace_event::ProcessMemoryDump* pmd,
+    const std::string& parent_dump_absolute_name) const {}
+
 }  // namespace net