Make content_shell_apk build completely

content/renderer/BUILD.gn

Index: content/renderer/BUILD.gn
diff --git a/content/renderer/BUILD.gn b/content/renderer/BUILD.gn
index ff1170a4663138b36638f916a811f4a340a2b2d4..9bc08b347945b195845082ed0a60c6b4f64495fb 100644
--- a/content/renderer/BUILD.gn
+++ b/content/renderer/BUILD.gn
@@ -5,6 +5,7 @@
 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
@@ -186,4 +187,13 @@ source_set("renderer") {
   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",
+    ]
+  }
 }