Instrument SourceStream using MemoryDumpProvider

net/url_request/url_request.cc

Index: net/url_request/url_request.cc
diff --git a/net/url_request/url_request.cc b/net/url_request/url_request.cc
index 75eb4220106fe424eb49df9492143b2558913953..a29e852ba44a75721a7adead7b7700f198178879 100644
--- a/net/url_request/url_request.cc
+++ b/net/url_request/url_request.cc
@@ -15,9 +15,12 @@
 #include "base/profiler/scoped_tracker.h"
 #include "base/rand_util.h"
 #include "base/stl_util.h"
+#include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/thread_task_runner_handle.h"
+#include "base/trace_event/memory_allocator_dump.h"
+#include "base/trace_event/process_memory_dump.h"
 #include "base/values.h"
 #include "net/base/auth.h"
 #include "net/base/host_port_pair.h"
@@ -1214,6 +1217,17 @@ void URLRequest::GetConnectionAttempts(ConnectionAttempts* out) const {
     out->clear();
 }
 
+void URLRequest::DumpMemoryStats(
+    base::trace_event::ProcessMemoryDump* pmd,
+    const std::string& parent_dump_absolute_name) const {
+  if (!job_)
+    return;
+  base::trace_event::MemoryAllocatorDump* url_request_dump =
+      pmd->CreateAllocatorDump(base::StringPrintf(
+          "%s/url_request_%p", parent_dump_absolute_name.c_str(), this));
+  job_->DumpMemoryStats(pmd, url_request_dump->absolute_name());
+}
+
 void URLRequest::set_status(URLRequestStatus status) {
   DCHECK(status_.is_io_pending() || status_.is_success() ||
          (!status.is_success() && !status.is_io_pending()));