Rename TestMojoMediaClient -> DefaultMojoMediaClient.

media/media_options.gni

 # 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("//build/config/chromecast_build.gni")
 import("//build/config/features.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 
 declare_args() {
   # Allows distributions to link pulseaudio directly (DT_NEEDED) instead of
@@ skipping 55 matching lines @@
     }
   }
 }
 
 declare_args() {
   # Experiment to enable mojo media services (e.g. "renderer", "cdm", see
   # |mojo_media_services|). When enabled, selected mojo paths will be enabled in
   # the media pipeline and corresponding services will hosted in the selected
   # remote process (e.g. "utility" process, see |mojo_media_host|).
   enable_mojo_media = is_android || (is_chromecast && !is_cast_desktop_build)
-
-  # Enable the TestMojoMediaClient to be used in MojoMediaApplication. This is
-  # for testing only and will override the default platform MojoMediaClient.
-  enable_test_mojo_media_client = false
 }
 
 # Use a second declare_args() to pick up possible overrides of enable_mojo_media
 # from --args command line flags. See "gn help declare_args".
 declare_args() {
   # A list of mojo media services that should be used in the media pipeline.
   # Must not be empty if |enable_mojo_media| is true.
   # Valid entries in the list are:
   # - "renderer": Use mojo-based media Renderer service.
   # - "cdm": Use mojo-based Content Decryption Module.
@@ skipping 26 matching lines @@
         "cdm",
         "renderer",
       ]
       mojo_media_host = "browser"
     } else {
       mojo_media_services = [ "video_decoder" ]
       mojo_media_host = "gpu"
     }
   }
 }