Motown: Use new TimelineTransform and related definitions

examples/audio_play_test/BUILD.gn

 # Copyright 2015 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/mojo_application.gni")
 
 group("audio_play_test") {
   deps = [
     ":play_tone",
     ":play_wav",
   ]
 }
 
 mojo_native_application("play_wav") {
   deps = [
     "//mojo/public/cpp/application:standalone",
     "//mojo/public/cpp/system",
     "//mojo/public/cpp/utility",
     "//mojo/services/media/audio/interfaces",
     "//mojo/services/media/common/cpp",
     "//mojo/services/media/common/interfaces",
+    "//mojo/services/media/core/interfaces",
     "//mojo/services/network/interfaces",
   ]
 
   sources = [
     "play_wav.cc",
   ]
 }
 
 mojo_native_application("play_tone") {
   deps = [
     "//mojo/public/cpp/application:standalone",
     "//mojo/public/cpp/utility",
     "//mojo/services/media/audio/interfaces",
     "//mojo/services/media/common/cpp",
     "//mojo/services/media/common/interfaces",
+    "//mojo/services/media/core/interfaces",
   ]
 
   sources = [
     "play_tone.cc",
   ]
 }