Dick Eastman in his Online Genealogy Newsletter wrote a post: Why Use a Chromebook?
In it he said:
For a genealogist, a major disadvantage of a Chromebook is the lack of
a good genealogy program. A few, small genealogy utilities are
available but nothing that approaches the capabilities of RootsMagic,
Legacy Family Tree, The Master Genealogist, Reunion, Heredis,
MacFamilyTree, Ancestral Quest, GRAMPS, Family Tree Maker, or the
other popular genealogy programs available today for Windows and
Macintosh. However, when connected to the Internet, a Chromebook works
well with most all the online genealogy applications, such as The Next
Generation (TNG) and PhpGedView. It also works well with almost all
the genealogy web sites, including FamilySearch, MyHeritage, WeRelate,
Ancestry, Geni, WikiTree, and many, many more.
There are several online sites that will do what you want. But you want to do it when disconnected from the internet, so it sounds like you'll need a native Chrome application for that.
Unfortunately none of the Chrome genealogy applications (6 at the time I'm writing this) listed in the chrome web store will do what you want, so you may be out of luck.