[NOT FOR LANDING] Detailed loading traces

net/http/http_response_info.cc

Index: net/http/http_response_info.cc
diff --git a/net/http/http_response_info.cc b/net/http/http_response_info.cc
index fe6e57e56e1924a889d8e3c4e53b025f08e2f9e3..fb6b50947f02395f911efe65454b7b345a136595 100644
--- a/net/http/http_response_info.cc
+++ b/net/http/http_response_info.cc
@@ -4,6 +4,7 @@
 
 #include "net/http/http_response_info.h"
 
+#include "base/trace_event/trace_event.h"
 #include "base/logging.h"
 #include "base/pickle.h"
 #include "base/time/time.h"
@@ -136,6 +137,7 @@ HttpResponseInfo::HttpResponseInfo(const HttpResponseInfo& rhs)
       metadata(rhs.metadata) {}
 
 HttpResponseInfo::~HttpResponseInfo() {
+  TRACE_EVENT0("toplevel", "HttpResponseInfo::~HttpResponseInfo");
 }
 
 HttpResponseInfo& HttpResponseInfo::operator=(const HttpResponseInfo& rhs) {
@@ -167,6 +169,8 @@ bool HttpResponseInfo::InitFromPickle(const base::Pickle& pickle,
                                       bool* response_truncated) {
   base::PickleIterator iter(pickle);
 
+  TRACE_EVENT0("toplevel", "HttpResponseInfo::InitFromPickle::A");
+
   // Read flags and verify version
   int flags;
   if (!iter.ReadInt(&flags))
@@ -202,12 +206,14 @@ bool HttpResponseInfo::InitFromPickle(const base::Pickle& pickle,
     if (!ssl_info.cert.get())
       return false;
   }
+
   if (flags & RESPONSE_INFO_HAS_CERT_STATUS) {
     CertStatus cert_status;
     if (!iter.ReadUInt32(&cert_status))
       return false;
     ssl_info.cert_status = cert_status;
   }
+
   if (flags & RESPONSE_INFO_HAS_SECURITY_BITS) {
     int security_bits;
     if (!iter.ReadInt(&security_bits))