[Chromecast] Hook up mojo media pipeline.

chromecast/media/mojo/BUILD.gn

+# 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.
+
+import("//media/media_options.gni")
+
+# We support mojo media service hosted in the browser process only.
+assert(enable_mojo_media == "browser")
+
+source_set("mojo") {
+  sources = [
+    "cast_media_application.cc",
+    "cast_media_application.h",
+    "cast_media_client.cc",
+    "cast_media_client.h",
+  ]
+  deps = [
+    "//base",
+    "//media/mojo/interfaces:interfaces_cpp_sources",
+    "//media/mojo/services:service_factory",
+    "//mojo/shell/public/cpp",
+  ]
+
+  public_configs = [ "//media/mojo/services:enable_mojo_media_config" ]
+}