chrome-sdk: re-use existing PS1 for shell

Rather than create a custom PS1 that people aren't use to, try and
extract the value the user has set up already.  This should hopefully
provide a more familiar environment.

TEST=`cros chrome-sdk` re-used my custom PS1

Change-Id: Ia3ba0abe8b55c45469ca956413470b26682e07a2
Reviewed-by: Michael Spang <>
Commit-Queue: Mike Frysinger <>
Tested-by: Mike Frysinger <>
1 file changed