media: Use IPC_STRUCT_TRAITS to convert SubsampleEntry for mojo

media/mojo/interfaces/media_types.typemap

Index: media/mojo/interfaces/media_types.typemap
diff --git a/media/mojo/interfaces/media_types.typemap b/media/mojo/interfaces/media_types.typemap
new file mode 100644
index 0000000000000000000000000000000000000000..1eff4f1b38da0aa938f602272f72f667db739410
--- /dev/null
+++ b/media/mojo/interfaces/media_types.typemap
@@ -0,0 +1,16 @@
+# 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.
+
+mojom = "//media/mojo/interfaces/media_types.mojom"
+
+public_headers = [ "//media/base/subsample_entry.h" ]
+
+traits_headers = [ "//media/base/ipc/media_param_traits_macros.h" ]
+
+deps = [
+  "//media",
+  "//media/base/ipc",
+]
+
+type_mappings = [ "media.mojom.SubsampleEntry=media::SubsampleEntry" ]