Sharing Files with other Chrome Extensions using ARC -

we have android application have developed , testing arc. part of functionality share word/pdf , other documents other applications on android device , have them pass content when done. however, since arc applications run in own sandbox instance of android there no other applications share using standard intents. know chrome extensions can message each other, there way access functionality android app running arc. ideally we'd share document have open in google drive, , able there using standard android intents. possible, or have @ other ways accomplish (i.e. sdks.)

update: here code use launch external activities have them open files editing:

    uri uri = uri.fromfile(attachmentfile);     intent intenturl = new intent(intent.action_view);     intenturl.setdataandtype(uri, applicationtype);     intenturl.setflags(intent.flag_activity_clear_top);     getcontext().startactivity(externalactivityintent); 

you can file google drive or other file provider available on chromeos using new intent: action_open_document