Support running without a boot image.

Bug: 17000769

Change-Id: I6404d5050c8a2f4ee6e70d58532eb25ee9de248e
diff --git a/runtime/parsed_options.h b/runtime/parsed_options.h
index 1afd610..ba1b848 100644
--- a/runtime/parsed_options.h
+++ b/runtime/parsed_options.h
@@ -51,6 +51,7 @@
   bool is_zygote_;
   bool must_relocate_;
   bool dex2oat_enabled_;
+  bool image_dex2oat_enabled_;
   std::string patchoat_executable_;
   bool interpreter_only_;
   bool is_explicit_gc_disabled_;