Mustash: Move GURL ParamTraits to url/ipc

url/ipc/url_ipc_export.h

Index: url/ipc/url_ipc_export.h
diff --git a/url/ipc/url_ipc_export.h b/url/ipc/url_ipc_export.h
new file mode 100644
index 0000000000000000000000000000000000000000..1da0fa6854b95381e91e2dc5c7d8a178db7833b7
--- /dev/null
+++ b/url/ipc/url_ipc_export.h
@@ -0,0 +1,29 @@
+// Copyright 2016 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 URL_IPC_EXPORT_H_
+#define URL_IPC_EXPORT_H_
+
+#if defined(COMPONENT_BUILD)
+#if defined(WIN32)
+
+#if defined(URL_IPC_IMPLEMENTATION)
+#define URL_IPC_EXPORT __declspec(dllexport)
+#else
+#define URL_IPC_EXPORT __declspec(dllimport)
+#endif  // defined(URL_IPC_IMPLEMENTATION)
+
+#else  // defined(WIN32)
+#if defined(URL_IPC_IMPLEMENTATION)
+#define URL_IPC_EXPORT __attribute__((visibility("default")))
+#else
+#define URL_IPC_EXPORT
+#endif
+#endif
+
+#else  // defined(COMPONENT_BUILD)
+#define URL_IPC_EXPORT
+#endif
+
+#endif  // URL_IPC_EXPORT_H_