Convert network hints to Mojo

components/network_hints/common/network_hints_param_traits.h

 // Copyright 2014 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.
 
-// Multiply-included file, no traditional include guard.
+#ifndef COMPONENTS_NETWORK_HINTS_COMMON_NETWORK_HINTS_PARAM_TRAITS_H_
+#define COMPONENTS_NETWORK_HINTS_COMMON_NETWORK_HINTS_PARAM_TRAITS_H_
+
 #include <string>
 #include <vector>
 
 #include "components/network_hints/common/network_hints_common.h"
 #include "ipc/ipc_message_macros.h"
 #include "ipc/ipc_message_utils.h"
 #include "url/ipc/url_param_traits.h"
 
-// Singly-included section for custom IPC traits.
-#ifndef COMPONENTS_NETWORK_HINTS_COMMON_NETWORK_HINTS_MESSAGES_H_
-#define COMPONENTS_NETWORK_HINTS_COMMON_NETWORK_HINTS_MESSAGES_H_
-
 namespace IPC {
 
 template <>
 struct ParamTraits<network_hints::LookupRequest> {
   typedef network_hints::LookupRequest param_type;
+  static void GetSize(base::PickleSizer* s, const param_type& p);
   static void Write(base::Pickle* m, const param_type& p);
   static bool Read(const base::Pickle* m,
                    base::PickleIterator* iter,
                    param_type* r);
   static void Log(const param_type& p, std::string* l);
 };
 
 }  // namespace IPC
 
-#endif  // COMPONENTS_NETWORK_HINTS_COMMON_NETWORK_HINTS_MESSAGES_H_
-
-#define IPC_MESSAGE_START NetworkHintsMsgStart
-
-//-----------------------------------------------------------------------------
-// Host messages
-// These are messages sent from the renderer process to the browser process.
-
-// Request for a DNS prefetch of the names in the array.
-// NameList is typedef'ed std::vector<std::string>
-IPC_MESSAGE_CONTROL1(NetworkHintsMsg_DNSPrefetch,
-                     network_hints::LookupRequest)
-
-
-// Request for preconnect to host providing resource specified by URL
-IPC_MESSAGE_CONTROL3(NetworkHintsMsg_Preconnect,
-                     GURL /* preconnect target url */,
-                     bool /* Does connection have its credentials flag set */,
-                     int /* number of connections */)
+#endif  // COMPONENTS_NETWORK_HINTS_COMMON_NETWORK_HINTS_PARAM_TRAITS_H_