ipc: Add ParamTraits<signed char>

ipc/ipc_message_utils.h

 // Copyright (c) 2012 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.
 
 #ifndef IPC_IPC_MESSAGE_UTILS_H_
 #define IPC_IPC_MESSAGE_UTILS_H_
 
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 115 matching lines @@
   }
   static bool Read(const Message* m,
                    base::PickleIterator* iter,
                    param_type* r) {
     return iter->ReadBool(r);
   }
   IPC_EXPORT static void Log(const param_type& p, std::string* l);
 };
 
 template <>
+struct IPC_EXPORT ParamTraits<signed char> {
+  typedef signed char param_type;
+  static void Write(Message* m, const param_type& p);
+  static bool Read(const Message* m, base::PickleIterator* iter, param_type* r);
+  static void Log(const param_type& p, std::string* l);
+};
+
+template <>
 struct IPC_EXPORT ParamTraits<unsigned char> {
   typedef unsigned char param_type;
   static void Write(Message* m, const param_type& p);
   static bool Read(const Message* m, base::PickleIterator* iter, param_type* r);
   static void Log(const param_type& p, std::string* l);
 };
 
 template <>
 struct IPC_EXPORT ParamTraits<unsigned short> {
   typedef unsigned short param_type;
@@ skipping 912 matching lines @@
   template <typename... Ts>
   static void WriteReplyParams(Message* reply, Ts... args) {
     ReplyParam p(args...);
     WriteParam(reply, p);
   }
 };
 
 }  // namespace IPC
 
 #endif  // IPC_IPC_MESSAGE_UTILS_H_