Rename TestMojoMediaClient -> DefaultMojoMediaClient.

media/mojo/services/mojo_media_application_factory.cc

 // 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.
 
 #include "media/mojo/services/mojo_media_application_factory.h"
 
 #include "base/memory/ptr_util.h"
 #include "media/mojo/services/mojo_media_application.h"
 
-#if defined(ENABLE_TEST_MOJO_MEDIA_CLIENT)
-#include "media/mojo/services/test_mojo_media_client.h"  // nogncheck
-using DefaultClient = media::TestMojoMediaClient;
-#elif defined(OS_ANDROID)
+#if defined(OS_ANDROID)
 #include "media/mojo/services/android_mojo_media_client.h"  // nogncheck
 using DefaultClient = media::AndroidMojoMediaClient;
 #else
 #include "media/mojo/services/default_mojo_media_client.h"  // nogncheck
 using DefaultClient = media::DefaultMojoMediaClient;
 #endif
 
 namespace media {
 
 // static
 std::unique_ptr<shell::Service> CreateMojoMediaApplication(
     const base::Closure& quit_closure) {
   return std::unique_ptr<shell::Service>(new MojoMediaApplication(
       base::MakeUnique<DefaultClient>(), quit_closure));
 }
 
 }  // namespace media