Add message sizing to basic IPC traits and struct macros.

ipc/param_traits_macros.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_PARAM_TRAITS_MACROS_H_
 #define IPC_PARAM_TRAITS_MACROS_H_
 
 #include <string>
 
 // Traits generation for structs.
 #define IPC_STRUCT_TRAITS_BEGIN(struct_name)                 \
   namespace IPC {                                            \
   template <>                                                \
   struct IPC_MESSAGE_EXPORT ParamTraits<struct_name> {       \
     typedef struct_name param_type;                          \
+    static void GetSize(base::PickleSizer* sizer,            \
+                        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* p);                         \
     static void Log(const param_type& p, std::string* l);    \
   };                                                         \
   }
 
 #define IPC_STRUCT_TRAITS_MEMBER(name)
 #define IPC_STRUCT_TRAITS_PARENT(type)
@@ skipping 20 matching lines @@
   IPC_ENUM_TRAITS_VALIDATE( \
       type, (static_cast<int>(value) >= static_cast<int>(minvalue) && \
              static_cast<int>(value) <= static_cast<int>(maxvalue)))
 
 // Traits generation for enums. This macro may be redefined later.
 #define IPC_ENUM_TRAITS_VALIDATE(enum_name, validation_expression) \
   namespace IPC {                                                  \
   template <>                                                      \
   struct IPC_MESSAGE_EXPORT ParamTraits<enum_name> {               \
     typedef enum_name param_type;                                  \
+    static void GetSize(base::PickleSizer* sizer,                  \
+                        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* p);                               \
     static void Log(const param_type& p, std::string* l);          \
   };                                                               \
   }
 
 #endif  // IPC_PARAM_TRAITS_MACROS_H_