Linux: fix header includes for system protobuf.

dbus/message.cc

 // 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.
 
 #include "dbus/message.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/format_macros.h"
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
 #include "dbus/object_path.h"
+
+#if defined(USE_SYSTEM_PROTOBUF)
+#include <google/protobuf/message_lite.h>
+#else
 #include "third_party/protobuf/src/google/protobuf/message_lite.h"
+#endif
 
 namespace {
 
 // Appends the header name and the value to |output|, if the value is
 // not empty.
 void AppendStringHeader(const std::string& header_name,
                         const std::string& header_value,
                         std::string* output) {
   if (!header_value.empty()) {
     *output += header_name + ": " + header_value + "\n";
@@ skipping 946 matching lines @@
   const bool success = PopBasic(DBUS_TYPE_UNIX_FD, &fd);
   if (!success)
     return false;
 
   value->PutValue(fd);
   // NB: the caller must check validity before using the value
   return true;
 }
 
 }  // namespace dbus