Replace IPC messages in layout_test_render_frame_observer.

content/shell/common/shell_param_traits.h

Index: content/shell/common/shell_param_traits.h
diff --git a/content/shell/common/shell_param_traits.h b/content/shell/common/shell_param_traits.h
new file mode 100644
index 0000000000000000000000000000000000000000..23f929f48e4774dcd56df70de31dadcc5c092475
--- /dev/null
+++ b/content/shell/common/shell_param_traits.h
@@ -0,0 +1,19 @@
+// Copyright 2017 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 "content/public/common/common_param_traits.h"
+#include "content/shell/common/shell_test_configuration.h"
+#include "ipc/ipc_message_macros.h"
+#include "ui/gfx/ipc/gfx_param_traits.h"
+#include "ui/gfx/ipc/skia/gfx_skia_param_traits.h"
+
+IPC_STRUCT_TRAITS_BEGIN(content::ShellTestConfiguration)
+  IPC_STRUCT_TRAITS_MEMBER(current_working_directory)
+  IPC_STRUCT_TRAITS_MEMBER(temp_path)
+  IPC_STRUCT_TRAITS_MEMBER(test_url)
+  IPC_STRUCT_TRAITS_MEMBER(enable_pixel_dumping)
+  IPC_STRUCT_TRAITS_MEMBER(allow_external_pages)
+  IPC_STRUCT_TRAITS_MEMBER(expected_pixel_hash)
+  IPC_STRUCT_TRAITS_MEMBER(initial_size)
+IPC_STRUCT_TRAITS_END()