Add support for sending protobuf messages over IPC.

chrome/common/common_message_generator.cc

 // Copyright (c) 2010 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.
 
 // Get basic type definitions.
 #define IPC_MESSAGE_IMPL
 #include "chrome/common/common_message_generator.h"
 
 // Generate constructors.
 #include "ipc/struct_constructor_macros.h"
+#include "chrome/common/safe_browsing/ipc_protobuf_message_null_macros.h"
 #include "chrome/common/common_message_generator.h"
 
 // Generate destructors.
 #include "ipc/struct_destructor_macros.h"
+#include "chrome/common/safe_browsing/ipc_protobuf_message_null_macros.h"

[sky, 2015/03/18 21:01:13]

Why do you have this include twice?

[grt (UTC plus 2), 2015/03/18 21:14:35]

ipc_protobuf_message_macros.h will eventually be included transitively by
common_message_generator.h (this is coming in a subsequent change that depends
on this one). since there are no protobuf-like analogs to constructor_macros.h
and destructor_macros.h, the various IPC_PROTOBUF_MESSAGE_TRAITS_* macros need
to be nulled out here to avoid multiple definition errors.

 #include "chrome/common/common_message_generator.h"
 
 // Generate param traits write methods.
 #include "ipc/param_traits_write_macros.h"
+#include "chrome/common/safe_browsing/protobuf_message_write_macros.h"
 namespace IPC {
 #include "chrome/common/common_message_generator.h"
 }  // namespace IPC
 
 // Generate param traits read methods.
 #include "ipc/param_traits_read_macros.h"
+#include "chrome/common/safe_browsing/protobuf_message_read_macros.h"
 namespace IPC {
 #include "chrome/common/common_message_generator.h"
 }  // namespace IPC
 
 // Generate param traits log methods.
 #include "ipc/param_traits_log_macros.h"
+#include "chrome/common/safe_browsing/protobuf_message_log_macros.h"
 namespace IPC {
 #include "chrome/common/common_message_generator.h"
 }  // namespace IPC