Instrument SourceStream using MemoryDumpProvider

net/url_request/url_request_context.cc

Index: net/url_request/url_request_context.cc
diff --git a/net/url_request/url_request_context.cc b/net/url_request/url_request_context.cc
index 42bcc899f06335addb72b43c43b1e6d9286143d4..7075c7effd44f55bbcb8013e1bc7928984304b97 100644
--- a/net/url_request/url_request_context.cc
+++ b/net/url_request/url_request_context.cc
@@ -135,6 +135,9 @@ bool URLRequestContext::OnMemoryDump(
       network_session->DumpMemoryStats(pmd, dump->absolute_name());
   }
   SSLClientSocketImpl::DumpSSLClientSessionMemoryStats(pmd);
+  for (const auto* url_request : *url_requests_.get()) {
+    url_request->DumpMemoryStats(pmd, dump->absolute_name());
+  }
   return true;
 }