Make HardwareChromeOS own debugd.

It only exists in Chrome OS, Brillo doesn't have it.

Test: ./update_engine_unittests
Bug: 28800946

Change-Id: I49d2024dbad5e0bf78bbc479f97dabb569b32c56
diff --git a/hardware_android.cc b/hardware_android.cc
index 8de02c7..653ccf9 100644
--- a/hardware_android.cc
+++ b/hardware_android.cc
@@ -122,6 +122,10 @@
   return property_get_bool("ro.debuggable", 0) != 1;
 }
 
+bool HardwareAndroid::AreDevFeaturesEnabled() const {
+  return !IsNormalBootMode();
+}
+
 bool HardwareAndroid::IsOOBEEnabled() const {
   // No OOBE flow blocking updates for Android-based boards.
   return false;