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

ipc/ipc_message_utils.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ipc/ipc_message_utils.h"
 
 #include "base/file_path.h"
 #include "base/json/json_writer.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/nullable_string16.h"
@@ skipping 269 matching lines @@
   if (ret)
     *r = base::TimeDelta::FromMicroseconds(value);
 
   return ret;
 }
 
 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);
 }
 
 bool ParamTraits<DictionaryValue>::Read(
     const Message* m, void** iter, param_type* r) {
   int type;
   if (!ReadParam(m, iter, &type) || type != Value::TYPE_DICTIONARY)
     return false;
 
@@ skipping 169 matching lines @@
       ReadParam(m, iter, &r->flags) &&
       ReadParam(m, iter, &r->sent) &&
       ReadParam(m, iter, &r->receive) &&
       ReadParam(m, iter, &r->dispatch) &&
       ReadParam(m, iter, &r->params);
   r->type = static_cast<uint16>(type);
   return result;
 }
 
 }  // namespace IPC