[NOT FOR REVIEW] Instrument net/ with trace events.

net/http/http_stream_factory_impl_job.cc

Index: net/http/http_stream_factory_impl_job.cc
diff --git a/net/http/http_stream_factory_impl_job.cc b/net/http/http_stream_factory_impl_job.cc
index 179fd9641df971fa4c8c369f0cf356a7054b9fd4..2632dc9860e0618a7a487f16a8232d55e39c6dfc 100644
--- a/net/http/http_stream_factory_impl_job.cc
+++ b/net/http/http_stream_factory_impl_job.cc
@@ -21,6 +21,7 @@
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/thread_task_runner_handle.h"
+#include "base/trace_event/trace_event.h"
 #include "base/values.h"
 #include "build/build_config.h"
 #include "net/base/connection_type_histograms.h"
@@ -540,6 +541,7 @@ void HttpStreamFactoryImpl::Job::OnStreamFailedCallback(int result) {
 
 void HttpStreamFactoryImpl::Job::OnCertificateErrorCallback(
     int result, const SSLInfo& ssl_info) {
+  TRACE_EVENT0("net", "net::HttpStreamFactoryImpl::Job::OnCertificateErrorCallback");
   DCHECK(!IsPreconnecting());
 
   MaybeCopyConnectionAttemptsFromSocketOrHandle();
@@ -620,6 +622,7 @@ void HttpStreamFactoryImpl::Job::OnIOComplete(int result) {
 }
 
 int HttpStreamFactoryImpl::Job::RunLoop(int result) {
+  TRACE_EVENT0("net", "net::HttpStreamFactoryImpl::Job::RunLoop");
   result = DoLoop(result);
 
   if (result == ERR_IO_PENDING)