Encrypted Media: Add DefaultCdmFactory.

media/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/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/features.gni")
 import("//build/config/linux/pkg_config.gni")
 import("//build/config/ui.gni")
 import("//media/media_options.gni")
@@ skipping 54 matching lines @@
       "--typename=MediaOzonePlatform",
       "--include=\"media/ozone/media_ozone_platform.h\"",
     ]
   }
 }
 
 component("media") {
   sources = [
     "cdm/aes_decryptor.cc",
     "cdm/aes_decryptor.h",
+    "cdm/default_cdm_factory.cc",
+    "cdm/default_cdm_factory.h",
     "cdm/json_web_key.cc",
     "cdm/json_web_key.h",
     "cdm/key_system_names.cc",
     "cdm/key_system_names.h",
     "cdm/player_tracker_impl.cc",
     "cdm/player_tracker_impl.h",
     "cdm/proxy_decryptor.cc",
     "cdm/proxy_decyrptor.h",
     "ffmpeg/ffmpeg_deleters.h",
     "filters/audio_clock.cc",
@@ skipping 663 matching lines @@
     deps = [
       ":media",
       ":shared_memory_support",
       "//base",
       "//ui/gl",
       "//ui/gfx",
       "//ui/gfx/geometry",
     ]
   }
 }