Add support for sending protobuf messages over IPC.

chrome/common/safe_browsing/protobuf_message_log_macros.h

+// Copyright 2015 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 CHROME_COMMON_SAFE_BROWSING_PROTOBUF_MESSAGE_LOG_MACROS_H_
+#define CHROME_COMMON_SAFE_BROWSING_PROTOBUF_MESSAGE_LOG_MACROS_H_
+
+// Null out all the macros that need nulling.
+#include "chrome/common/safe_browsing/ipc_protobuf_message_null_macros.h"
+
+// Set up so next include will generate log methods.
+#undef IPC_PROTOBUF_MESSAGE_TRAITS_BEGIN
+#undef IPC_PROTOBUF_MESSAGE_TRAITS_OPTIONAL_FUNDAMENTAL_MEMBER
+#undef IPC_PROTOBUF_MESSAGE_TRAITS_OPTIONAL_COMPLEX_MEMBER
+#undef IPC_PROTOBUF_MESSAGE_TRAITS_REPEATED_COMPLEX_MEMBER
+#undef IPC_PROTOBUF_MESSAGE_TRAITS_END
+
+#define IPC_PROTOBUF_MESSAGE_TRAITS_BEGIN(message_name)                      \
+  void ParamTraits<message_name>::Log(const param_type& p, std::string* l) { \
+    bool needs_comma = false;                                                \
+    l->append("(");
+#define IPC_PROTOBUF_MESSAGE_TRAITS_OPTIONAL_FUNDAMENTAL_MEMBER(name) \
+  if (needs_comma)                                                    \
+    l->append(", ");                                                  \
+  LogParam(p.name(), l);                                              \
+  needs_comma = true;
+#define IPC_PROTOBUF_MESSAGE_TRAITS_OPTIONAL_COMPLEX_MEMBER(name) \
+  if (needs_comma)                                                \
+    l->append(", ");                                              \
+  LogParam(p.name(), l);                                          \
+  needs_comma = true;
+#define IPC_PROTOBUF_MESSAGE_TRAITS_REPEATED_COMPLEX_MEMBER(name) \
+  if (needs_comma)                                                \
+    l->append(", ");                                              \
+  LogParam(p.name(), l);                                          \
+  needs_comma = true;
+#define IPC_PROTOBUF_MESSAGE_TRAITS_END() }
+
+#endif  // CHROME_COMMON_SAFE_BROWSING_PROTOBUF_MESSAGE_LOG_MACROS_H_