Use a monotonic clock (TimeTicks) to report network times to WebCore.

ipc/ipc_message_utils.cc

Index: ipc/ipc_message_utils.cc
diff --git a/ipc/ipc_message_utils.cc b/ipc/ipc_message_utils.cc
index 6ef03f4328de9ed89da61728e1fd321adc15ceee..c531bfdc49cdc8816f5612012caf93d60e92b1d9 100644
--- a/ipc/ipc_message_utils.cc
+++ b/ipc/ipc_message_utils.cc
@@ -287,6 +287,23 @@ void ParamTraits<base::TimeDelta> ::Log(const param_type& p, std::string* l) {
   ParamTraits<int64> ::Log(p.InMicroseconds(), l);
 }
 
+void ParamTraits<base::TimeTicks>::Write(Message* m, const param_type& p) {
+  ParamTraits<int64>::Write(m, p.ToInternalValue());
+}
+
+bool ParamTraits<base::TimeTicks>::Read(const Message* m, void** iter,
+                                        param_type* r) {
+  int64 value;
+  if (!ParamTraits<int64>::Read(m, iter, &value))
+    return false;
+  *r = base::TimeTicks::FromInternalValue(value);
+  return true;
+}
+
+void ParamTraits<base::TimeTicks>::Log(const param_type& p, std::string* l) {
+  ParamTraits<int64>::Log(p.ToInternalValue(), l);
+}
+
 void ParamTraits<DictionaryValue>::Write(Message* m, const param_type& p) {
   WriteValue(m, &p, 0);
 }