media: Convert mojo media defines to buildflags

content/gpu/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("//build/config/ui.gni")
 import("//gpu/vulkan/features.gni")
 import("//media/media_options.gni")
 import("//ui/ozone/ozone.gni")
 
 # See //content/BUILD.gn for how this works.
@@ skipping 43 matching lines @@
     "//content/child",
     "//content/common",
     "//content/common:mojo_bindings",
     "//content/public/child:child_sources",
     "//content/public/common:common_sources",
     "//gpu:gpu",
     "//gpu/ipc/common:command_buffer_traits",
     "//gpu/ipc/service",
     "//ipc",
     "//media/gpu",
+    "//media/mojo:features",
 
     # TODO(jrummell): As //media/gpu/ipc/service is a source_set in a
     # component build, determine if it should not be included here.
     # http://crbug.com/702833.
     "//media/gpu/ipc/service",
     "//media/mojo/clients:clients",
     "//services/service_manager/public/cpp",
     "//services/service_manager/public/interfaces",
     "//services/shape_detection:lib",
     "//services/shape_detection/public/interfaces",
@@ skipping 36 matching lines @@
   }
 
   if (use_ozone) {
     deps += [ "//ui/ozone" ]
   }
 
   if (enable_vulkan) {
     deps += [ "//gpu/vulkan" ]
   }
 }