Make content_shell_apk build completely

content/renderer/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/features.gni")
 import("//build/config/ui.gni")
 import("//content/renderer/renderer.gni")
+import("//media/media_options.gni")
 
 source_set("renderer") {
   # Only the public target should depend on this. All other targets (even
   # internal content ones) should depend on the public one.
   visibility = [ "//content/public/renderer:renderer_sources" ]
 
   sources = rebase_path(content_renderer_gypi_values.private_renderer_sources,
                         ".", "//content")
 
   configs += [
@@ skipping 161 matching lines @@
       "media/crypto/pepper_cdm_wrapper_impl.cc",
       "media/crypto/pepper_cdm_wrapper_impl.h",
       "media/crypto/ppapi_decryptor.cc",
       "media/crypto/ppapi_decryptor.h",
     ]
   }
 
   if (printing_mode == 1) {
     deps += [ "//printing" ]
   }
+
+  if (enable_browser_cdms) {
+    sources += [
+      "media/crypto/proxy_media_keys.cc",
+      "media/crypto/proxy_media_keys.h",
+      "media/crypto/renderer_cdm_manager.cc",
+      "media/crypto/renderer_cdm_manager.h",
+    ]
+  }
 }