media: Create Mojo StructTraits for VideoFrame

media/mojo/interfaces/BUILD.gn

 # Copyright 2014 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.
 
 import("//mojo/public/tools/bindings/mojom.gni")
 
 mojom("interfaces") {
   sources = [
     "audio_decoder.mojom",
     "audio_output_stream.mojom",
@@ skipping 33 matching lines @@
 
   # TODO(crbug.com/714018): Convert the implementation to use OnceCallback.
   use_once_callback = false
 }
 
 mojom("remoting") {
   sources = [
     "remoting.mojom",
   ]
 }
+
+mojom("test_interfaces") {
+  testonly = true
+  sources = [
+    "traits_test_service.mojom",
+  ]
+  public_deps = [
+    ":interfaces",
+  ]
+}