So I hunted down some info. and here is my ADB logcat of errors.
01-14 14:17:28.415: E/Trace(3804): error opening trace file: No such file or directory (2)
01-14 14:17:28.855: E/dalvikvm(3804): Could not find class 'org.xwalk.runtime.extension.api.DisplayManagerJBMR1', referenced from method org.xwalk.runtime.extension.api.XWalkDisplayManager.getInstance
01-14 14:17:28.865: E/XWalkExtensionManager(3804): Failed to read extensions-config.json
----- I think this is the one that breaks the program --------
01-14 14:17:30.245: E/chromium(3804): [ERROR:audio_manager_base.cc(422)] Not implemented reached in virtual std::string media::AudioManagerBase::GetDefaultOutputDeviceID()
------------------------------------------------------------
01-14 14:17:30.285: A/libc(3804): Fatal signal 4 (SIGILL) at 0x5e390a8c (code=1), thread 3870 (om.xdkhtml5test)
I've tried using other APKs to test with. But they all compile to a just the assets size and not the entire run environment with it :|