[Chromecast][GN] Cleanup gn check errors

chromecast/common/media/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("//chromecast/chromecast.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 
 # GYP target: chromecast.gyp:cast_shell_media
 source_set("media") {
   sources = [
     "cast_media_client.cc",
     "cast_media_client.h",
   ]
 
   deps = [
     "//base",
     "//chromecast/media/base",
+    "//chromecast/media/cdm",
     "//chromecast/public:public",
     "//media",
   ]
 
   if (is_android) {
     sources += [
       "cast_media_client_android.cc",
       "cast_media_client_android.h",
     ]
     deps += [
       "//chromecast/media/base",
       "//components/cdm/common",
       "//media/base/android",
     ]
   }
 
   if (use_playready) {
     public_configs = [ "//chromecast:playready_config" ]
   }
 }
 
 mojom("interfaces") {
   sources = [
     "media_caps.mojom",
   ]
 }